网页计算器 

<html>
    <head>
        <title>test</title>
        <meta charset="UTF-8"/>
        <script type="text/javascript">
            var a=0;
            var t;
            function f () {
                document.getElementById("di").value=a;
                a++;
                t=setTimeout("f()",1000);
            }
            function ff () {
                document.getElementById("di").value=a;
                clearTimeout(t);
            }            
            function fff () {
                document.getElementById("di").value=0;
                clearTimeout(t);
                a=0;
            }
        </script>
    </head>
    <body>
        <button onclick="f()">click</button>
        <input id="di" type="text" value=0>
        <button onclick="ff()">stop</button>
        <button onclick="fff()">again</button>
    </body>
</html>

 

posted on 2016-08-02 01:08  Kooing  阅读(145)  评论(0)    收藏  举报

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