Web Front-end
JS Tutorial
Detailed explanation of jQuery queue control method queue()/dequeue()/clearQueue()_jquery
Detailed explanation of jQuery queue control method queue()/dequeue()/clearQueue()_jquery
May 16, 2016 pm 06:14 PM
Let’s first explain the meaning of each of these methods.
queue(name,[callback]): When only one parameter is passed in, it returns and points to the queue of the first matching element (which will be A function array, the queue name defaults to fx); when two parameters are passed in, the first parameter still defaults to the queue name of fx, and the second parameter is divided into two situations. When the second parameter is a function, it will add a function at the end of the queue of matching elements. When the second parameter is a function array, it will replace the queue of matching elements with a new queue (function array). Maybe, this can be understood I’m a little confused. Later, there will be Click here to view the DEMO.
dequeue(name): This is easy to understand, it is to remove a queue function from the front of the queue, and Execute it.
clearQueue([queueName]):This is a new method in 1.4. Clear all queues that have not been executed on the object. The parameters are optional and the default is fx. But I personally feel that this method does not How useful is it? You can use the queue() method to pass in the second parameter of the two parameters to implement the clearQueue method.
Now, we want to achieve such an effect. There are number squares marked from 1 to 7. These seven are required The blocks fall sequentially from left to right.Click here to view the DEMO
I won’t post the css and html parts, they are included in the DEMO. If According to conventional practice, you may need to use the following jQ code to implement:
$('.one').delay(500).animate({top:' =270px'},500,function(){
$('.two').delay(500).animate({ top:' =270px'},500,function(){
$('.three').delay(500).animate({top:' =270px'},500,function(){
$('.four').delay(500).animate({top:' =270px'},500,function(){
$('.five').delay(500).animate({top :' =270px'},500,function(){
$('.six').delay(500).animate({top:' =270px'},500,function(){
$ ('.seven').animate({top:' =270px'},500,function(){
alert('Sequential falling movement ends! Yeah!')
});
} );
});
});
});
});
});
Well, yes, the effect is perfect It is presented, but can you bear this dizzy code? Even if you can bear it, if at this time, you want to change a certain execution order, for example, you want 5 to fall before starting to fall 3, or What should I do after adding eight new squares from 8 to 15? Rewrite? Be careful about the changes in it? Obviously, we need another concise and convenient method to achieve this effect, and that is the jQuery queue control method. Please Look at the following code:
var _slideFun=[
function (){$('.one').delay(500).animate({top:' =270px'},500,_takeOne);},
function(){$('.two').delay (300).animate({top:' =270px'},500,_takeOne);},
function(){$('.three').delay(300).animate({top:' =270px '},500,_takeOne);},
function(){$('.four').delay(300).animate({top:' =270px'},500,_takeOne);},
function(){$('.five').delay(300).animate({top:' =270px'},500,_takeOne);},
function(){$('.six') .delay(300).animate({top:' =270px'},500,_takeOne);},
function(){$('.seven').delay(300).animate({top:' =270px'},500,function(){
alert('Sequential falling movement ends! Yeah!');
});}
];
$('#demo') .queue('slideList',_slideFun);
var _takeOne=function(){
$('#demo').dequeue('slideList');
};
_takeOne();
In this way, it looks much simpler. How to implement it?
1. Create a new array and put the animation functions in order (is it convenient to change the order and add new animations in this way? More?);
2. Use queue to add this set of animation function array to the slideList queue;
3. Use dequeue to take out the first function in the slideList queue and execute it;
4. Initial Execute the first function.
There are also detailed comments in the DEMO demonstration. If you still don’t understand the above explanation, please look at the source code.
As for the clearQueue() method, I won’t say much more. The stop button is called in the demonstration. The clearQueue() method is used. Of course, you can also use the queue() method to directly replace the current function queue with an [] empty array (I personally recommend empty array replacement., more intuitive).
Original post On Mr.Think’s blog: http://mrthink.net/jqueyapi-queue-dequeue/
Hot AI Tools
Undress AI Tool
Undress images for free
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
Java vs. JavaScript: Clearing Up the Confusion
Jun 20, 2025 am 12:27 AM
Java and JavaScript are different programming languages, each suitable for different application scenarios. Java is used for large enterprise and mobile application development, while JavaScript is mainly used for web page development.
Javascript Comments: short explanation
Jun 19, 2025 am 12:40 AM
JavaScriptcommentsareessentialformaintaining,reading,andguidingcodeexecution.1)Single-linecommentsareusedforquickexplanations.2)Multi-linecommentsexplaincomplexlogicorprovidedetaileddocumentation.3)Inlinecommentsclarifyspecificpartsofcode.Bestpractic
How to work with dates and times in js?
Jul 01, 2025 am 01:27 AM
The following points should be noted when processing dates and time in JavaScript: 1. There are many ways to create Date objects. It is recommended to use ISO format strings to ensure compatibility; 2. Get and set time information can be obtained and set methods, and note that the month starts from 0; 3. Manually formatting dates requires strings, and third-party libraries can also be used; 4. It is recommended to use libraries that support time zones, such as Luxon. Mastering these key points can effectively avoid common mistakes.
JavaScript vs. Java: A Comprehensive Comparison for Developers
Jun 20, 2025 am 12:21 AM
JavaScriptispreferredforwebdevelopment,whileJavaisbetterforlarge-scalebackendsystemsandAndroidapps.1)JavaScriptexcelsincreatinginteractivewebexperienceswithitsdynamicnatureandDOMmanipulation.2)Javaoffersstrongtypingandobject-orientedfeatures,idealfor
Why should you place tags at the bottom of the ?
Jul 02, 2025 am 01:22 AM
PlacingtagsatthebottomofablogpostorwebpageservespracticalpurposesforSEO,userexperience,anddesign.1.IthelpswithSEObyallowingsearchenginestoaccesskeyword-relevanttagswithoutclutteringthemaincontent.2.Itimprovesuserexperiencebykeepingthefocusonthearticl
JavaScript: Exploring Data Types for Efficient Coding
Jun 20, 2025 am 12:46 AM
JavaScripthassevenfundamentaldatatypes:number,string,boolean,undefined,null,object,andsymbol.1)Numbersuseadouble-precisionformat,usefulforwidevaluerangesbutbecautiouswithfloating-pointarithmetic.2)Stringsareimmutable,useefficientconcatenationmethodsf
What is event bubbling and capturing in the DOM?
Jul 02, 2025 am 01:19 AM
Event capture and bubble are two stages of event propagation in DOM. Capture is from the top layer to the target element, and bubble is from the target element to the top layer. 1. Event capture is implemented by setting the useCapture parameter of addEventListener to true; 2. Event bubble is the default behavior, useCapture is set to false or omitted; 3. Event propagation can be used to prevent event propagation; 4. Event bubbling supports event delegation to improve dynamic content processing efficiency; 5. Capture can be used to intercept events in advance, such as logging or error processing. Understanding these two phases helps to accurately control the timing and how JavaScript responds to user operations.
What's the Difference Between Java and JavaScript?
Jun 17, 2025 am 09:17 AM
Java and JavaScript are different programming languages. 1.Java is a statically typed and compiled language, suitable for enterprise applications and large systems. 2. JavaScript is a dynamic type and interpreted language, mainly used for web interaction and front-end development.
