超简单的定时器有关问题
日期：2014-05-16 浏览次数：20484 次
超简单的定时器问题？
<Script>
function show() {
document.write(new Date().getSeconds());
setTimeout( "hide() ",500);
}
function hide() {
setTimeout( "show() ",500);
}
</Script>
<Body onload= "show() ">
</Body>
怎么没用呢 郁闷~说网页中有错误` --一新手
------解决方案--------------------
document.write不能用在onload事件中及其以后.
------解决方案--------------------
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN ">
<html>
<head>
<title> New Document </title>
<meta name= "Generator " content= "EditPlus ">
<meta name= "Author " content= " ">
<meta name= "Keywords " content= " ">
<meta name= "Description " content= " ">
</head>
<body>
<Script>
div = document.createElement( "div ");
div.id= "div ";
document.body.appendChild(div);
function show() {
// document.write(new Date().getSeconds());
div.innerHTML = new Date().getSeconds();
setTimeout( "hide() ",500);
}
function hide() {
setTimeout( "show() ",500);
}
</Script>
<Body onload= "show() ">
<input type= "button " onclick= "alert(document.body.innerHTML); ">
</Body>
</body>
</html>
<Script>
function show() {
document.write(new Date().getSeconds());
setTimeout( "hide() ",500);
}
function hide() {
setTimeout( "show() ",500);
}
</Script>
<Body onload= "show() ">
</Body>
怎么没用呢 郁闷~说网页中有错误` --一新手
------解决方案--------------------
document.write不能用在onload事件中及其以后.
------解决方案--------------------
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN ">
<html>
<head>
<title> New Document </title>
<meta name= "Generator " content= "EditPlus ">
<meta name= "Author " content= " ">
<meta name= "Keywords " content= " ">
<meta name= "Description " content= " ">
</head>
<body>
<Script>
div = document.createElement( "div ");
div.id= "div ";
document.body.appendChild(div);
function show() {
// document.write(new Date().getSeconds());
div.innerHTML = new Date().getSeconds();
setTimeout( "hide() ",500);
}
function hide() {
setTimeout( "show() ",500);
}
</Script>
<Body onload= "show() ">
<input type= "button " onclick= "alert(document.body.innerHTML); ">
</Body>
</body>
</html>
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