网站首页  汉语字词  英语词汇  考试资料  写作素材  旧版资料

请输入您要查询的考试资料：

　

标题 html5计时器小例子
内容
    html:
    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>
    <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>
    &copy; copyright reserved
    </p>
    </footer>
    </div>
    </body>
    </html>
    css3:
    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;
    }
随便看

　

在线学习网考试资料包含高考、自考、专升本考试、人事考试、公务员考试、大学生村官考试、特岗教师招聘考试、事业单位招聘考试、企业人才招聘、银行招聘、教师招聘、农村信用社招聘、各类资格证书考试等各类考试资料。

　

Copyright © 2002-2024 cuapp.net All Rights Reserved
更新时间：2025/5/21 13:06:16