html:
复制代码代码如下:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<!-- Always force latest IE rendering engine (even in intranet) & Chrome Frame
Remove this if you use the .htaccess -->
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>HTML5 Timer for work-relax balance</title>
<meta name="description" content="">
<meta name="author" content="kevin">
<meta name="viewport" content="width=device-width; initial-scale=1.0">
<!-- Replace favicon.ico & apple-touch-icon.png in the root of your domain and delete these references -->
<link rel="shortcut icon" href="/favicon.ico"/>
<link rel="apple-touch-icon" href="/apple-touch-icon.png"/>
<link rel="stylesheet" type="text/css" href="css/style.css">
<script>
countDownSeconds = 60;
var handle = null;
//window load
function onLoadWindow() {
aCanvas = document.getElementById("countdownCanvas");
context = aCanvas.getContext("2d");
var canvasText = "Press to Start...";
var xPos = aCanvas.width / 2;
var yPos = aCanvas.height / 2;
context.font = "12pt Century Gothic";
context.fillStyle = "#008000;";
context.textAlign = "center";
context.textBaseline = "middle";
context.fillText(canvasText, xPos, yPos);
}
function updateCanvas(theContext, width, height) {
if (countDownSeconds < 0) {
clearInterval(handle);
handle = null;
alert("hey, time is up!");
return 0;
}
minStr = Math.floor(countDownSeconds / 60);
secStr = countDownSeconds % 60;
if (minStr < 10) {
minStr = "0" + minStr;
}
if (secStr < 10) {
secStr = "0" + secStr;
}
context.clearRect(0, 0, width, height);
context.font = "24pt Century Gothic";
context.fillText(minStr + " : " + secStr, width / 2, height / 2);
countDownSeconds--;
}
function startWorkCountDown() {
if (handle != null) {
clearInterval(handle);
}
countDownSeconds = document.getElementById("workIntervalInput").value * 60;
timeDisplayCanvas = document.getElementById("countdownCanvas");
timeDisplayContext2D = timeDisplayCanvas.getContext("2d");
updateCanvas(timeDisplayContext2D, timeDisplayCanvas.width, timeDisplayCanvas.height);
handle = setInterval(function() {
updateCanvas(timeDisplayContext2D, timeDisplayCanvas.width, timeDisplayCanvas.height);
}, 1000);
}
function startRestCountDown() {
if (handle != null) {
clearInterval(handle);
}
countDownSeconds = document.getElementById("restIntervalInput").value * 60;
timeDisplayCanvas = document.getElementById("countdownCanvas");
timeDisplayContext2D = timeDisplayCanvas.getContext("2d");
updateCanvas(timeDisplayContext2D, timeDisplayCanvas.width, timeDisplayCanvas.height);
handle = setInterval(function() {
updateCanvas(timeDisplayContext2D, timeDisplayCanvas.width, timeDisplayCanvas.height);
}, 1000);
}
</script>
</head>
<body onload="onLoadWindow()">
<div align="center">
<header>
<h1>work-life balance timer</h1>
</header>
Please choose the work interval:
<input name="workIntervalInput" id="workIntervalInput" type="number" value="25" min="15" max="45" step="5"/>
minutes
Please choose the rest interval:
<input name="restIntervalInput" id="restIntervalInput" type="number" value="5" min="3" max="10" step="1"/>
minutes
<canvas id="countdownCanvas" width="300" height="50" style="border:2px solid black">
This is a canvas
</canvas>
<button onclick="startWorkCountDown()">
Work Hard
</button>
<button onclick="startRestCountDown()">
Take A Break
</button>
<footer>
<p>
© Copyright Reserved
</p>
</footer>
</div>
</body>
</html>
css3:
复制代码代码如下:
/*
* HTML5 ✰ Boilerplate
*
* What follows is the result of much research on cross-browser styling.
* Credit left inline and big thanks to Nicolas Gallagher, Jonathan Neal,
* Kroc Camen, and the H5BP dev community and team.
*
* Detailed information about this CSS: h5bp.com/css
*
* ==|== normalize ==========================================================
*/
/* =============================================================================
HTML5 display definitions
========================================================================== */
article, aside, details, figcaption, figure, footer, header, hgroup, nav, section { display: block; }
header {text-shadow: #220000 0px 0px 10px 10px;}
audio, canvas, video { display: inline-block; *display: inline; *zoom: 1; }
audio:not([controls]) { display: none; }
[hidden] { display: none; }
/* =============================================================================
Base
========================================================================== */
/*
* 1. Correct text resizing oddly in IE6/7 when body font-size is set using em units
* 2. Force vertical scrollbar in non-IE
* 3. Prevent iOS text size adjust on device orientation change, without disabling user zoom: h5bp.com/g
*/
html { font-size: 100%; overflow-y: scroll; -webkit-text-size-adjust: 100%; -ms-text-size-adjust: 100%; }
body { margin: 0; font-size: 24px; line-height: 1.231;}
body, button, input, select, textarea {font-family:"Century Gothic"; color:#008000}
/*
* Remove text-shadow in selection highlight: h5bp.com/i
* These selection declarations have to be separate
* Also: hot pink! (or customize the background color to match your design)
*/
::-moz-selection { background: #fe57a1; color: #fff; text-shadow: none; }
::selection { background: #fe57a1; color: #fff; text-shadow: none; }
/* =============================================================================
Links
========================================================================== */
a { color: #00e; }
a:visited { color: #551a8b; }
a:hover { color: #06e; }
a:focus { outline: thin dotted; }
/* Improve readability when focused and hovered in all browsers: h5bp.com/h */
a:hover, a:active { outline: 0; }
/* =============================================================================
Typography
========================================================================== */
abbr[title] { border-bottom: 1px dotted; }
b, strong { font-weight: bold; }
blockquote { margin: 1em 40px; }
dfn { font-style: italic; }
hr { display: block; height: 1px; border: 0; border-top: 1px solid #ccc; margin: 1em 0; padding: 0; }
ins { background: #ff9; color: #000; text-decoration: none; }
mark { background: #ff0; color: #000; font-style: italic; font-weight: bold; }
/* Redeclare monospace font family: h5bp.com/j */
pre, code, kbd, samp { font-family: monospace, monospace; _font-family: 'courier new', monospace; font-size: 1em; }
/* Improve readability of pre-formatted text in all browsers */
pre { white-space: pre; white-space: pre-wrap; word-wrap: break-word; }
q { quotes: none; }
q:before, q:after { content: ""; content: none; }
small { font-size: 85%; }
/* Position subscript and superscript content without affecting line-height: h5bp.com/k */
sub, sup { font-size: 75%; line-height: 0; position: relative; vertical-align: baseline; }
sup { top: -0.5em; }
sub { bottom: -0.25em; }
/* =============================================================================
Lists
========================================================================== */
ul, ol { margin: 1em 0; padding: 0 0 0 40px; }
dd { margin: 0 0 0 40px; }
nav ul, nav ol { list-style: none; list-style-image: none; margin: 0; padding: 0; }
/* =============================================================================
Embedded content
========================================================================== */
/*
* 1. Improve image quality when scaled in IE7: h5bp.com/d
* 2. Remove the gap between images and borders on image containers: h5bp.com/e
*/
img { border: 0; -ms-interpolation-mode: bicubic; vertical-align: middle; }
/*
* Correct overflow not hidden in IE9
*/
svg:not(:root) { overflow: hidden; }
/* =============================================================================
Figures
========================================================================== */
figure { margin: 0; }
/* =============================================================================
Forms
========================================================================== */
form { margin: 0; }
fieldset { border: 0; margin: 0; padding: 0; }
/* Indicate that 'label' will shift focus to the associated form element */
label { cursor: pointer; }
/*
* 1. Correct color not inheriting in IE6/7/8/9
* 2. Correct alignment displayed oddly in IE6/7
*/
legend { border: 0; *margin-left: -7px; padding: 0; }
/*
* 1. Correct font-size not inheriting in all browsers
* 2. Remove margins in FF3/4 S5 Chrome
* 3. Define consistent vertical alignment display in all browsers
*/
button, input, select, textarea { font-size: 100%; margin: 0; vertical-align: baseline; *vertical-align: middle; }
/*
* 1. Define line-height as normal to match FF3/4 (set using !important in the UA stylesheet)
* 2. Correct inner spacing displayed oddly in IE6/7
*/
button, input { line-height: normal; *overflow: visible; }
/*
* Reintroduce inner spacing in 'table' to avoid overlap and whitespace issues in IE6/7
*/
table button, table input { *overflow: auto; }
/*
* 1. Display hand cursor for clickable form elements
* 2. Allow styling of clickable form elements in iOS
*/
button, input[type="button"], input[type="reset"], input[type="submit"] { cursor: pointer; -webkit-appearance: button; }
/*
* Consistent box sizing and appearance
*/
input[type="checkbox"], input[type="radio"] { box-sizing: border-box; }
input[type="search"] { -webkit-appearance: textfield; -moz-box-sizing: content-box; -webkit-box-sizing: content-box; box-sizing: content-box; }
input[type="search"]::-webkit-search-decoration { -webkit-appearance: none; }
/*
* Remove inner padding and border in FF3/4: h5bp.com/l
*/
button::-moz-focus-inner, input::-moz-focus-inner { border: 0; padding: 0; }
/*
* 1. Remove default vertical scrollbar in IE6/7/8/9
* 2. Allow only vertical resizing
*/
textarea { overflow: auto; vertical-align: top; resize: vertical; }
/* Colors for form validity */
input:valid, textarea:valid { }
input:invalid, textarea:invalid { background-color: #f0dddd; }
/* =============================================================================
Tables
========================================================================== */
table { border-collapse: collapse; border-spacing: 0; }
td { vertical-align: top; }
/* ==|== primary styles =====================================================
Author:
========================================================================== */
/* ==|== non-semantic helper classes ========================================
Please define your styles before this section.
========================================================================== */
/* For image replacement */
.ir { display: block; border: 0; text-indent: -999em; overflow: hidden; background-color: transparent; background-repeat: no-repeat; text-align: left; direction: ltr; }
.ir br { display: none; }
/* Hide from both screenreaders and browsers: h5bp.com/u */
.hidden { display: none !important; visibility: hidden; }
/* Hide only visually, but have it available for screenreaders: h5bp.com/v */
.visuallyhidden { border: 0; clip: rect(0 0 0 0); height: 1px; margin: -1px; overflow: hidden; padding: 0; position: absolute; width: 1px; }
/* Extends the .visuallyhidden class to allow the element to be focusable when navigated to via the keyboard: h5bp.com/p */
.visuallyhidden.focusable:active, .visuallyhidden.focusable:focus { clip: auto; height: auto; margin: 0; overflow: visible; position: static; width: auto; }
/* Hide visually and from screenreaders, but maintain layout */
.invisible { visibility: hidden; }
/* Contain floats: h5bp.com/q */
.clearfix:before, .clearfix:after { content: ""; display: table; }
.clearfix:after { clear: both; }
.clearfix { zoom: 1; }
/* ==|== media queries ======================================================
PLACEHOLDER Media Queries for Responsive Design.
These override the primary ('mobile first') styles
Modify as content requires.
========================================================================== */
@media only screen and (min-width: 480px) {
/* Style adjustments for viewports 480px and over go here */
}
@media only screen and (min-width: 768px) {
/* Style adjustments for viewports 768px and over go here */
}
/* ==|== print styles =======================================================
Print styles.
Inlined to avoid required HTTP connection: h5bp.com/r
========================================================================== */
@media print {
* { background: transparent !important; color: black !important; text-shadow: none !important; filter:none !important; -ms-filter: none !important; } /* Black prints faster: h5bp.com/s */
a, a:visited { text-decoration: underline; }
a[href]:after { content: " (" attr(href) ")"; }
abbr[title]:after { content: " (" attr(title) ")"; }
.ir a:after, a[href^="javascript:"]:after, a[href^="#"]:after { content: ""; } /* Don't show links for images, or javascript/internal links */
pre, blockquote { border: 1px solid #999; page-break-inside: avoid; }
thead { display: table-header-group; } /* h5bp.com/t */
tr, img { page-break-inside: avoid; }
img { max-width: 100% !important; }
@page { margin: 0.5cm; }
p, h2, h3 { orphans: 3; widows: 3; }
h2, h3 { page-break-after: avoid; }
}
#startTimer{
position:inherit
width:75px;
height:20px;
top:35px;
left:25px;
cursor:pointer
}
#stopTimer{
position:inherit;
width:75px;
height:20px;
top:10px;
left:25px;
cursor:pointer
}
#countdownCanvas{
border-radius:25px;
box-shadow:10px 10px 5px #888888;
}
复制代码代码如下:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<!-- Always force latest IE rendering engine (even in intranet) & Chrome Frame
Remove this if you use the .htaccess -->
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>HTML5 Timer for work-relax balance</title>
<meta name="description" content="">
<meta name="author" content="kevin">
<meta name="viewport" content="width=device-width; initial-scale=1.0">
<!-- Replace favicon.ico & apple-touch-icon.png in the root of your domain and delete these references -->
<link rel="shortcut icon" href="/favicon.ico"/>
<link rel="apple-touch-icon" href="/apple-touch-icon.png"/>
<link rel="stylesheet" type="text/css" href="css/style.css">
<script>
countDownSeconds = 60;
var handle = null;
//window load
function onLoadWindow() {
aCanvas = document.getElementById("countdownCanvas");
context = aCanvas.getContext("2d");
var canvasText = "Press to Start...";
var xPos = aCanvas.width / 2;
var yPos = aCanvas.height / 2;
context.font = "12pt Century Gothic";
context.fillStyle = "#008000;";
context.textAlign = "center";
context.textBaseline = "middle";
context.fillText(canvasText, xPos, yPos);
}
function updateCanvas(theContext, width, height) {
if (countDownSeconds < 0) {
clearInterval(handle);
handle = null;
alert("hey, time is up!");
return 0;
}
minStr = Math.floor(countDownSeconds / 60);
secStr = countDownSeconds % 60;
if (minStr < 10) {
minStr = "0" + minStr;
}
if (secStr < 10) {
secStr = "0" + secStr;
}
context.clearRect(0, 0, width, height);
context.font = "24pt Century Gothic";
context.fillText(minStr + " : " + secStr, width / 2, height / 2);
countDownSeconds--;
}
function startWorkCountDown() {
if (handle != null) {
clearInterval(handle);
}
countDownSeconds = document.getElementById("workIntervalInput").value * 60;
timeDisplayCanvas = document.getElementById("countdownCanvas");
timeDisplayContext2D = timeDisplayCanvas.getContext("2d");
updateCanvas(timeDisplayContext2D, timeDisplayCanvas.width, timeDisplayCanvas.height);
handle = setInterval(function() {
updateCanvas(timeDisplayContext2D, timeDisplayCanvas.width, timeDisplayCanvas.height);
}, 1000);
}
function startRestCountDown() {
if (handle != null) {
clearInterval(handle);
}
countDownSeconds = document.getElementById("restIntervalInput").value * 60;
timeDisplayCanvas = document.getElementById("countdownCanvas");
timeDisplayContext2D = timeDisplayCanvas.getContext("2d");
updateCanvas(timeDisplayContext2D, timeDisplayCanvas.width, timeDisplayCanvas.height);
handle = setInterval(function() {
updateCanvas(timeDisplayContext2D, timeDisplayCanvas.width, timeDisplayCanvas.height);
}, 1000);
}
</script>
</head>
<body onload="onLoadWindow()">
<div align="center">
<header>
<h1>work-life balance timer</h1>
</header>
Please choose the work interval:
<input name="workIntervalInput" id="workIntervalInput" type="number" value="25" min="15" max="45" step="5"/>
minutes
Please choose the rest interval:
<input name="restIntervalInput" id="restIntervalInput" type="number" value="5" min="3" max="10" step="1"/>
minutes
<canvas id="countdownCanvas" width="300" height="50" style="border:2px solid black">
This is a canvas
</canvas>
<button onclick="startWorkCountDown()">
Work Hard
</button>
<button onclick="startRestCountDown()">
Take A Break
</button>
<footer>
<p>
© Copyright Reserved
</p>
</footer>
</div>
</body>
</html>
css3:
复制代码代码如下:
/*
* HTML5 ✰ Boilerplate
*
* What follows is the result of much research on cross-browser styling.
* Credit left inline and big thanks to Nicolas Gallagher, Jonathan Neal,
* Kroc Camen, and the H5BP dev community and team.
*
* Detailed information about this CSS: h5bp.com/css
*
* ==|== normalize ==========================================================
*/
/* =============================================================================
HTML5 display definitions
========================================================================== */
article, aside, details, figcaption, figure, footer, header, hgroup, nav, section { display: block; }
header {text-shadow: #220000 0px 0px 10px 10px;}
audio, canvas, video { display: inline-block; *display: inline; *zoom: 1; }
audio:not([controls]) { display: none; }
[hidden] { display: none; }
/* =============================================================================
Base
========================================================================== */
/*
* 1. Correct text resizing oddly in IE6/7 when body font-size is set using em units
* 2. Force vertical scrollbar in non-IE
* 3. Prevent iOS text size adjust on device orientation change, without disabling user zoom: h5bp.com/g
*/
html { font-size: 100%; overflow-y: scroll; -webkit-text-size-adjust: 100%; -ms-text-size-adjust: 100%; }
body { margin: 0; font-size: 24px; line-height: 1.231;}
body, button, input, select, textarea {font-family:"Century Gothic"; color:#008000}
/*
* Remove text-shadow in selection highlight: h5bp.com/i
* These selection declarations have to be separate
* Also: hot pink! (or customize the background color to match your design)
*/
::-moz-selection { background: #fe57a1; color: #fff; text-shadow: none; }
::selection { background: #fe57a1; color: #fff; text-shadow: none; }
/* =============================================================================
Links
========================================================================== */
a { color: #00e; }
a:visited { color: #551a8b; }
a:hover { color: #06e; }
a:focus { outline: thin dotted; }
/* Improve readability when focused and hovered in all browsers: h5bp.com/h */
a:hover, a:active { outline: 0; }
/* =============================================================================
Typography
========================================================================== */
abbr[title] { border-bottom: 1px dotted; }
b, strong { font-weight: bold; }
blockquote { margin: 1em 40px; }
dfn { font-style: italic; }
hr { display: block; height: 1px; border: 0; border-top: 1px solid #ccc; margin: 1em 0; padding: 0; }
ins { background: #ff9; color: #000; text-decoration: none; }
mark { background: #ff0; color: #000; font-style: italic; font-weight: bold; }
/* Redeclare monospace font family: h5bp.com/j */
pre, code, kbd, samp { font-family: monospace, monospace; _font-family: 'courier new', monospace; font-size: 1em; }
/* Improve readability of pre-formatted text in all browsers */
pre { white-space: pre; white-space: pre-wrap; word-wrap: break-word; }
q { quotes: none; }
q:before, q:after { content: ""; content: none; }
small { font-size: 85%; }
/* Position subscript and superscript content without affecting line-height: h5bp.com/k */
sub, sup { font-size: 75%; line-height: 0; position: relative; vertical-align: baseline; }
sup { top: -0.5em; }
sub { bottom: -0.25em; }
/* =============================================================================
Lists
========================================================================== */
ul, ol { margin: 1em 0; padding: 0 0 0 40px; }
dd { margin: 0 0 0 40px; }
nav ul, nav ol { list-style: none; list-style-image: none; margin: 0; padding: 0; }
/* =============================================================================
Embedded content
========================================================================== */
/*
* 1. Improve image quality when scaled in IE7: h5bp.com/d
* 2. Remove the gap between images and borders on image containers: h5bp.com/e
*/
img { border: 0; -ms-interpolation-mode: bicubic; vertical-align: middle; }
/*
* Correct overflow not hidden in IE9
*/
svg:not(:root) { overflow: hidden; }
/* =============================================================================
Figures
========================================================================== */
figure { margin: 0; }
/* =============================================================================
Forms
========================================================================== */
form { margin: 0; }
fieldset { border: 0; margin: 0; padding: 0; }
/* Indicate that 'label' will shift focus to the associated form element */
label { cursor: pointer; }
/*
* 1. Correct color not inheriting in IE6/7/8/9
* 2. Correct alignment displayed oddly in IE6/7
*/
legend { border: 0; *margin-left: -7px; padding: 0; }
/*
* 1. Correct font-size not inheriting in all browsers
* 2. Remove margins in FF3/4 S5 Chrome
* 3. Define consistent vertical alignment display in all browsers
*/
button, input, select, textarea { font-size: 100%; margin: 0; vertical-align: baseline; *vertical-align: middle; }
/*
* 1. Define line-height as normal to match FF3/4 (set using !important in the UA stylesheet)
* 2. Correct inner spacing displayed oddly in IE6/7
*/
button, input { line-height: normal; *overflow: visible; }
/*
* Reintroduce inner spacing in 'table' to avoid overlap and whitespace issues in IE6/7
*/
table button, table input { *overflow: auto; }
/*
* 1. Display hand cursor for clickable form elements
* 2. Allow styling of clickable form elements in iOS
*/
button, input[type="button"], input[type="reset"], input[type="submit"] { cursor: pointer; -webkit-appearance: button; }
/*
* Consistent box sizing and appearance
*/
input[type="checkbox"], input[type="radio"] { box-sizing: border-box; }
input[type="search"] { -webkit-appearance: textfield; -moz-box-sizing: content-box; -webkit-box-sizing: content-box; box-sizing: content-box; }
input[type="search"]::-webkit-search-decoration { -webkit-appearance: none; }
/*
* Remove inner padding and border in FF3/4: h5bp.com/l
*/
button::-moz-focus-inner, input::-moz-focus-inner { border: 0; padding: 0; }
/*
* 1. Remove default vertical scrollbar in IE6/7/8/9
* 2. Allow only vertical resizing
*/
textarea { overflow: auto; vertical-align: top; resize: vertical; }
/* Colors for form validity */
input:valid, textarea:valid { }
input:invalid, textarea:invalid { background-color: #f0dddd; }
/* =============================================================================
Tables
========================================================================== */
table { border-collapse: collapse; border-spacing: 0; }
td { vertical-align: top; }
/* ==|== primary styles =====================================================
Author:
========================================================================== */
/* ==|== non-semantic helper classes ========================================
Please define your styles before this section.
========================================================================== */
/* For image replacement */
.ir { display: block; border: 0; text-indent: -999em; overflow: hidden; background-color: transparent; background-repeat: no-repeat; text-align: left; direction: ltr; }
.ir br { display: none; }
/* Hide from both screenreaders and browsers: h5bp.com/u */
.hidden { display: none !important; visibility: hidden; }
/* Hide only visually, but have it available for screenreaders: h5bp.com/v */
.visuallyhidden { border: 0; clip: rect(0 0 0 0); height: 1px; margin: -1px; overflow: hidden; padding: 0; position: absolute; width: 1px; }
/* Extends the .visuallyhidden class to allow the element to be focusable when navigated to via the keyboard: h5bp.com/p */
.visuallyhidden.focusable:active, .visuallyhidden.focusable:focus { clip: auto; height: auto; margin: 0; overflow: visible; position: static; width: auto; }
/* Hide visually and from screenreaders, but maintain layout */
.invisible { visibility: hidden; }
/* Contain floats: h5bp.com/q */
.clearfix:before, .clearfix:after { content: ""; display: table; }
.clearfix:after { clear: both; }
.clearfix { zoom: 1; }
/* ==|== media queries ======================================================
PLACEHOLDER Media Queries for Responsive Design.
These override the primary ('mobile first') styles
Modify as content requires.
========================================================================== */
@media only screen and (min-width: 480px) {
/* Style adjustments for viewports 480px and over go here */
}
@media only screen and (min-width: 768px) {
/* Style adjustments for viewports 768px and over go here */
}
/* ==|== print styles =======================================================
Print styles.
Inlined to avoid required HTTP connection: h5bp.com/r
========================================================================== */
@media print {
* { background: transparent !important; color: black !important; text-shadow: none !important; filter:none !important; -ms-filter: none !important; } /* Black prints faster: h5bp.com/s */
a, a:visited { text-decoration: underline; }
a[href]:after { content: " (" attr(href) ")"; }
abbr[title]:after { content: " (" attr(title) ")"; }
.ir a:after, a[href^="javascript:"]:after, a[href^="#"]:after { content: ""; } /* Don't show links for images, or javascript/internal links */
pre, blockquote { border: 1px solid #999; page-break-inside: avoid; }
thead { display: table-header-group; } /* h5bp.com/t */
tr, img { page-break-inside: avoid; }
img { max-width: 100% !important; }
@page { margin: 0.5cm; }
p, h2, h3 { orphans: 3; widows: 3; }
h2, h3 { page-break-after: avoid; }
}
#startTimer{
position:inherit
width:75px;
height:20px;
top:35px;
left:25px;
cursor:pointer
}
#stopTimer{
position:inherit;
width:75px;
height:20px;
top:10px;
left:25px;
cursor:pointer
}
#countdownCanvas{
border-radius:25px;
box-shadow:10px 10px 5px #888888;
}
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苹果官宣WWDC 2024！预计会有大批AI功能 - 2024/11/23
3月27日消息，苹果宣布2024年全球开发者大会（WWDC）将于6月10日至6月14日举行，巧合的是，这次大会与端午假期重合。
苹果官方表示：
在线参加 Apple 每年规模最大的开发者盛会。亲眼见证 Apple 最新平台、技术和工具的发布。了解如何创建和改进你的 App 和游戏。与 Apple 设计师和工程师互动交流，与全球开发者社区建立联系。以上活动均免费在线举行。
探索各种新的工具、框架和功能，助力你打造出理想的 App 和游戏。通过视频讲座学习新技能，与 Apple 专家进行一对一会面，以推进你的项目，完善你的构思。
Swift Student Challenge 旨在支持和鼓舞下一代开发者、创作者和企业家。太平洋时间 3 月 28 日，我们将公布今年的获奖者名单。获奖者将有资格参加在 Apple Park 举办的特别活动。我们还会选出 50 名杰出获胜者，他们将受邀前往库比提诺，获得为期三天的非凡体验，包括参加 Apple Park 的特别活动。
3月27日消息，苹果宣布2024年全球开发者大会（WWDC）将于6月10日至6月14日举行，巧合的是，这次大会与端午假期重合。
苹果官方表示：
在线参加 Apple 每年规模最大的开发者盛会。亲眼见证 Apple 最新平台、技术和工具的发布。了解如何创建和改进你的 App 和游戏。与 Apple 设计师和工程师互动交流，与全球开发者社区建立联系。以上活动均免费在线举行。
探索各种新的工具、框架和功能，助力你打造出理想的 App 和游戏。通过视频讲座学习新技能，与 Apple 专家进行一对一会面，以推进你的项目，完善你的构思。
Swift Student Challenge 旨在支持和鼓舞下一代开发者、创作者和企业家。太平洋时间 3 月 28 日，我们将公布今年的获奖者名单。获奖者将有资格参加在 Apple Park 举办的特别活动。我们还会选出 50 名杰出获胜者，他们将受邀前往库比提诺，获得为期三天的非凡体验，包括参加 Apple Park 的特别活动。
RTX 5090要首发 性能要翻倍！三星展示GDDR7显存
三星在GTC上展示了专为下一代游戏GPU设计的GDDR7内存。
首次推出的GDDR7内存模块密度为16GB，每个模块容量为2GB。其速度预设为32 Gbps（PAM3），但也可以降至28 Gbps，以提高产量和初始阶段的整体性能和成本效益。
据三星表示，GDDR7内存的能效将提高20%，同时工作电压仅为1.1V，低于标准的1.2V。通过采用更新的封装材料和优化的电路设计，使得在高速运行时的发热量降低，GDDR7的热阻比GDDR6降低了70%。
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2024年11月23日
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