Implementation code of pause function in Javascript_javascript skills

Copy code The code is as follows:

<script language="javascript">
/* Implementation of the pause function in Javascript
Javascript itself does not have a pause function (sleep cannot be used) and vbscript cannot use doEvents, so this function is written to implement this function.
Javascript is a weak object language, and a function can also be used as an object.
For example:
function Test(){
alert("hellow");
this.NextStep=function(){
alert("NextStep");
}
}
We can call var myTest=new Test();myTest.NextStep();

When we pause, we can divide a function into two parts, and the status before the pause operation remains unchanged. Put the code to be executed after the pause in this.NextStep.
In order to control pause and resume, we need to write two functions to implement the pause and resume functions respectively.
The pause function is as follows:
*/
function Pause(obj,iMinSecond){
if (window.eventList==null) window.eventList=new Array();
var ind= -1;
for (var i=0;i<window.eventList.length;i ){
if (window.eventList[i]==null) {
window.eventList[i]= obj;
ind=i;
break;
}
}

if (ind==-1){
ind=window.eventList.length;
window.eventList[ind]=obj;
}
setTimeout("GoOn(" ind ")",1000);
}
/*
This function sets the function to be paused Put it into the array window.eventList, and call the continuation function through setTimeout.

The continued function is as follows:
*/

function GoOn(ind){
var obj=window.eventList[ind];
window.eventList[ind]= null;
if (obj.NextStep) obj.NextStep();
else obj();
}
/*
This function calls the NextStep method of the suspended function, if there is no This method calls the function again.


After the function is written, we can make it as follows:
*/
function Test(){
alert("hellow");
Pause(this, 1000);//Call the pause function
this.NextStep=function(){
alert("NextStep");
}
}
</script>