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js uses setTimeout to implement timing* method_javascript skills

WBOYOriginal: 2016-05-16 16:04:501044browse

The example in this article describes how to use setTimeout in js to implement a time bomb. Share it with everyone for your reference. The specific analysis is as follows:

Today I read the blog post of CSS Exploration Journey, and there was an effect of using setTimeout to write a time bomb, so I decided to write one just like a cat.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"/>
<title>无标题文档</title>
<style>
div{
width:200px;
height:50px;
margin:30px auto 0;
background:#ccc;
text-align:center;
font:14px/50px arial;
cursor:pointer
}
</style>
<script type="text/javascript" src="js/jquery_1.4.2.js"></script>
</head>
<body>
<div id="zha">开始定时</div>
<div id="chai" style="display:none">拆除炸弹</div>
<script>
$("#zha").bind("click",function(){
 zha();
})
$("#chai").bind("click",function(){
 chai();
})
var time = 5;
var timer = 0;
function zha(){
 var text = "倒计时";
 text += time--;
 $("#zha").text(text);
 if(time >=0){
  timer = setTimeout(zha,1000);
  $("#zha").css("color","black");
  $("#chai").show();
 }else{
  $("#zha").text("爆炸");
  $("#zha").css("color","red");
  time = 5;
  $("#chai").fadeOut();
 }
}
function chai(){
 clearTimeout(timer);
 $("#zha").text("炸弹拆除成功,点击继续");
}
</script>
</body>
</html>

I hope this article will be helpful to everyone’s JavaScript programming design.

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