JavaScript Timer detailed _javascript tips

Timer

Basic format:

Copy Code code as follows:

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

/*

Description: 1.setInterval Returns a timer ID value

can receive this way. var setId = setinterval (...);

2. The purpose of receiving setid is to clear the timer.

Cleartimeout (SETID);

*/

For example

a one-time timer

Format:

Copy Code code as follows:

settimeout (function () {code},1000)

Case:

Copy Code code as follows:

var setId = settimeout (function () {
Alert (' Execute only once ');
},1000);

Title Scrolling case

Copy Code code as follows:

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

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