Javascript timer _ javascript skills

This article mainly introduces the related information about the javascript timer, which is very comprehensive and detailed. For more information, see Timer

Basic format:

The code is as follows:

SetInterval (function () {code}, 1000 );

/*

Description: 1. setInterval returns a timer ID value.

Yes. Var setId = setInterval (....);

2. the purpose of receiving setId is to clear the timer.

ClearTimeout (setId );

*/

For example

One-time timer

Format:

The code is as follows:

SetTimeout (function () {code}, 1000)

Case:

The code is as follows:

Var setId = setTimeout (function (){
Alert ('only execute once ');
},1000 );

Title rolling case

The code is as follows:

SetInterval (function (){
Var tit = document. title;
// 1 ~ Length + 0
Document. title = tit. substring (1) + tit. substring (0, 1 );
},1000 );

I hope my friends will have a new understanding of the javascript timer through this article. if you have any questions, please leave a message for me.