JavaScript方法和技巧大全——基础知识(3)
2010-09-14 13:40:03 来源:WEB开发网核心提示:指定次数循环1<script>2 var myArray = new Array(3);3 myArray[0] = “Item 0”;4 myArray[1] = “Item 1”;5 myArray[2] = “Item 2”;6
指定次数循环
1<script>
2 var myArray = new Array(3);
3 myArray[0] = “Item 0”;
4 myArray[1] = “Item 1”;
5 myArray[2] = “Item 2”;
6 for (i = 0; i < myArray.length; i++) {
7 document.write(myArray[i] + “<br>”);
8 }
9</script>
设定将来执行
1<script>
2 function hello() {
3 window.alert(“Hello”);
4 }
5 window.setTimeout(“hello()”,5000);
6</script>
定时执行函数
1<script>
2 function hello() {
3 window.alert(“Hello”);
4 window.setTimeout(“hello()”,5000);
5 }
6 window.setTimeout(“hello()”,5000);
7</script>
取消定时执行
1<script>
2 function hello() {
3 window.alert(“Hello”);
4 }
5 var myTimeout = window.setTimeout(“hello()”,5000);
6 window.clearTimeout(myTimeout);
7</script>
在页面卸载时候执行函数
1<body onUnload=”functionName();”>
2 Body of the page
3</body>
Tags:JavaScript 方法 技巧
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