在js中,延遲執行函數有兩種:setTimeout和setInterval
setTimeout("test()","2000"); //2000毫秒后執行test()函數,只執行一次。
setInterval("test()","2000"); //每隔2000毫秒執行一次test()函數,執行無數次。
var interval = window.setInterval("test()","2000");
window.clearInterval(interval); //停止執行setInterval循環。
當我們想讓test()函數每隔2000毫秒執行一次,執行10000毫秒后停止執行時,可以用兩者三者結合使用來實現。
var interval2 = window.setInterval("openit2()",2000);
setTimeout(function() {window.clearInterval(interval2);},10000);
帶參方法執行延遲
setTimeout(function(){return executeQueryTask(data);},"10000");
例子:
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script>
var num = 3;
window.onload = function(){
var s = window.setInterval(function(){
document.getElementById("s").innerHTML=num;
num--;
if(num<=0){
window.close();
}
}, 1000);
}
</script>
</head>
<body>
<h1><s:property value="msg"/></h1>
<h2>本窗口在<span id="s">3</span>秒之后關閉!</h2>
<input type=button value=關閉窗口 onclick="window.close();" />
</body>
</html>
angularJs 的延遲是 $timeout方法
//當timeout被定義時,它返回一個promise對象
var timer = $timeout(
function() {
console.log( "Timeout executed", Date.now() );
},
2000
);
