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javascript 计时器

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

<script type="text/javascript">
        var int= setInterval(clock(),100);
        function clock(){
            var time = new Date();
            document.getElementsById("clock").value = time;

        }
    </script>
</head>
<body>
    <input type="text" id="clock" size="50" />
</body>

在input里每100毫秒的频率显示当前时间，可是document.getElementsById("clock").value = time;怎么也不能value的input

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1 Answer

answered Feb 17, 2021 by 深蓝 (71.8m points)

你这问题多的啊..

 setInterval你直接传入了clock()，改为clock
 document.getElementsById("clock")注意没有s，是getElementById
 script里面用window.onload包裹一下或者直接加到input标签的后面

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