I tried the password.

var intervalId = setInterval(function(){ alert(" a ")； }, 1000);

setTimeout(function(){

clearInterval(intervalId)}，5000)；

It doesn't matter.

Here is all the code, save it as test.html, you can execute it, no problem.

& lt script & gt

var intervalId = setInterval(function(){ alert(" a ")； }, 1000);

setTimeout(function(){

clearInterval(intervalId)}，5000)；

& lt/script & gt；

Why not try it in IE? The code you added is fine.

You just use intervalId as a global variable, and you use jquery, right?

Define global variables, and then clear them.

Write in another way

In the header section of the document

& lt scripting language =' javascript'>

var interva

& lt/script & gt；

The following call is like this.

interval = setInterval(function(){ alert(" a ")； }, 1000);

I don't understand what the code here is for.

You rewrote the interval again. Try another name, such as valid 2.

besides

clear interval($(" # interval ")。 val())；

This is a character type, and valid is long plastic in IE and plastic in FF. There must be different types here.

$("#play ")。 Click (function () {

clear interval($(" # interval ")。 val())；

intervalId = setInterval(interval，click times)； $("#intervalId ")。 attr("value "，intervalId)；

});