This article mainly introduces the setTimeout principle, the significance of setTimeout (function () {...}, 0), the this point of setTimeout and parameter issues. It has good reference value. Let's take a look at it below. This article mainly introduces the setTimeout principle; se
SetTimeout and SetInterval are two very magical ways of window objects that enable you to call a function or a piece of code periodically or in a delay.(Novice may think that settimeout and setinterval are JavaScript tutorial functions, which is wrong.) Beginners can easily confuse JavaScript object functions with Dom object methods. )
First a piece of code, you can guess what the results will be in variou
Example one:
View Demo Download source code
The settimeout () method is used to call a function or evaluate an expression after a specified number of milliseconds, while SetInterval () invokes the function or expression at the specified number of milliseconds, until clearinterval clears it. That is, settimeout () is executed only once, and setinterval () can be executed multiple times. The parameters for
Detailed usage of JavaScriptwindow. setTimeout (). For more information, see. SetTimeout (expression, latency)
SetTimeout (expression, interaction time)
The latency/interaction time is in the unit of haoss (1000 ms = 1 s). When setTimeout is executed, it is executed once after the specified delay time after loading, an
SetTimeout (expression, delay time); Unit: ms (ms); 1s1000ms; setInterval (expression, interaction time); Unit: ms (ms); 1s1000ms; window. when setTimeout () is executed, it executes an expression or function at the specified time after loading; only
SetTimeout (expression, delay time); Unit: ms (ms); 1 s = 1000 ms;
SetInterval (expression, interaction time); Uni
Quickly learn how to use setTimeout and setInterval in Node. js, node. jssettimeout
Node. js and js also have timers, time-out timers, interval timers, and timely timers. They and the process. nextTick (callback) function are used to schedule events. Learn how to use setTimeout and setInterval today.
1. setTimeout timeout timer (similar to after in GCD)
You can u
JavaScript's settimeout and setinterval functions are widely used to deal with delays and timed tasks, such as opening a Web page for a period of time after a pop-up login box, the page to send asynchronous requests every time to obtain the latest data and so on. But there are differences in their application.
The settimeout () method is used to call a function or evaluate an expression after a specified n
JavaScript you don't know: funny settimeout.
Sometimes small details tend to hide great wisdom.Today, when looking back at JavaScript advanced usage, find an interesting question, say not much, first on the code:
for(varj=0;jTen; j + +) {SetTimeout ( function(){Console. log (j)}, the)}Seeing these three lines of code, you might be impatient: Talk about closures again? You're going to puke, ok
Setinterval is the method for setting the time to call the function repeatedly;
SetTimeout is a latency method. It specifies the time after which the execution starts;
Setinterval: regularly refresh the application-for example:
$ (Document). Ready (function (){Setinterval (FIG, 5000 );});
Function refreshmeetinfo (){$. Ajax ({Type: 'post ',URL: 'bookshop. do? Parameter = refreshmeetinfo ',Cache: false
Set the timer and run the Specified Code after a period of time. The difference between setTimeout and setinterval is that the Code specified by the setTimeout function is only executed once.
Method 1:
Window. setTimeout ("alert ('OK')", 5000 );
Method 2:
Window. setTimeout (function (){Alert ("OK ");},5000 );
Method 3
Normal 0 7.8 磅 0 2 false false false MicrosoftInternetExplorer4
classid="clsid:38481807-CA0E-42D2-BF39-B33AF135CC4D" id=ieooui>
Setinterval and setTimeout usage in S
Set latency in JS:Setinterval and setTimeoutVery similar. SetTimeout is used to perform an operation after a delay period.SetTimeout ("function", ti
SetTimeout
Describe
SetTimeout (CODE,MILLISEC)
The settimeout () method is used to call a function or evaluate an expression after a specified number of milliseconds.
Note: During the call process, you can use Cleartimeout (id_of_settimeout) to terminate
Parameters
Description
Code
Required, the JavaScript code string t
SetTimeoutdefinition and Usage:The SetTimeout () method is used to call a function or evaluate an expression after a specified number of milliseconds.Syntax:SetTimeout (CODE,MILLISEC)Parameters:Code (required): The JavaScript code string to execute after the function to be called. Millisec (required): The number of milliseconds to wait before executing the code.Tips:SetTimeout () executes code only once.If you want to call more than once, use SetInter
1. setInterval () usage _ Learning Copy codeThe Code is as follows:// Method for Automatic execution every secondVar c = 0;Function showLogin (){Alert (c ++ );}// SetInterval method or string, millisecond, parameter array (method ))SetInterval ("showLogin ()", "1000 "); 2. setTimeout How to use setTimeout () in the js classSetTimeout (expression, latency)SetTimeout
How to use setTimeout () in the JS classSetTimeout (expression, latency)SetTimeout (expression, interaction time)The delay time/interaction time is in the unit of luxury seconds (1000 ms = 1 s)
When setTimeout is executed, it is executed once after the specified delay after loading, and only onceWhen setTimeout is exec
SetInterval () loop executes the appropriate methodSetTimeout () to be executed after the specified time1. SetTimeout (Expression,delaytime), after Delaytime, will perform a expression,settimeout application after a delay for a period of time, and then perform an operation. SetTimeout ("", Time) sets a timeout object 2. SetInterval (Expression,delaytime), each de
ArticleDirectory
SetTimeout setinterval
14.1 use of setTimeout and setinterval
Javascript setTimeout setinterval
SetTimeout setinterval The basic structure of the Internet is based on a series of static states, which are generally called pages. From Chapter 2, we can see that DHTML breaks this
//Execute setthe ID returned by the timeout function varTimeoutcount; //cycle (in milliseconds/ms), refreshed on average every 3 seconds varTimecycle = 3000; $(function () {GetData (); }); //Send a request to the server and get the return result functionGetData () {$.ajax ({type:' GET ', URL:‘...‘, DataType:"JSON", Global:false, Success:function(data) {/*to do*/Timeoutcount=setTimeout (GetData,
Use of settimeout and setintervalBoth of these methods can be used to implement JavaScript after a fixed time period. But each has its own application scenario.MethodIn fact, settimeout and setinterval have the same syntax. They all have two parameters, one is the code string to execute, and one is the time interval in milliseconds, and the code executes after that time period.However, the two functions are
In the writing H5 game often need to use the Timed Refresh page to achieve the animation effect, more commonly known as settimeout () and setinterval (), but everyone on the use of setinterval and settimeout understand, The following through this article for everyone to explain the use of JS in SetInterval and settimeout, need to refer to the friendSetTimeoutDesc
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.