setTimeout()使用

Basic setTimeout() Example

setTimeout(function() {
      // Do something after 5 seconds
}, );

Tip: you can use the ClearTimeout() function to clear any timer values previously stored.

timeout = setTimeout('timeout_trigger()', );
clearTimeout(timeout);

More setTimeout() Examples

jQuery(document).ready(function () {
    //hide a div after 3 seconds
    setTimeout( "jQuery('#div').hide();", );
});

Or in a different way:

jQuery(document).ready(function () {
    //hide a div after 3 seconds
    setTimeout(function(){ jQuery("#div").hide(); }, );
});
<!-- show a message for  seconds after you click the button -->
<input type="button" value="click me"
 onclick="setTimeout('window.alert(\'Hello!\')', 2000)" />

Or as a function:

<script language="Javascript">

function timeout_trigger() {
    window.alert('Hello!');  
} function timeout_init() {
    setTimeout('timeout_trigger()', );
} </script>
<input type="button" value="click me" onclick="timeout_init()" />

案例:

var timeover;
var timeout; $(".namelistul li img").mouseover(function(){
clearTimeout(timeover);
clearTimeout(timeout);
var namelistli = $(this).parent();//父节点
timeover = setTimeout(function() {
if(namelistli.has("span").length==){
var $span = $("<span class='namelistdel' style='position:absolute;'><img src='/images/select_imgbt.png'></span>");
$(namelistli).prepend($span); }
}, );
//删除其他的span
namelistli.siblings().find("span").remove(); }); $("body").on("mouseout", '.namelistdel', function(){
clearTimeout(timeover); //鼠标离开解除延迟
clearTimeout(timeout);
timeout = setTimeout(function() {
$(".namelistdel").remove();
}, );
});
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