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This article introduces the relevant knowledge of "how jquery makes the method trigger only once". In the actual case operation process, many people will encounter such difficulties. Next, let Xiaobian lead you to learn how to deal with these situations! I hope you can read carefully and learn something!

In jquery, you can use the one() function to make the method fire only once, when using this function, each element can only run the event handling method once, syntax is "element object.one(event handling method);".

This tutorial operates on Windows 7, jquery version 1.10.0, Dell G3 PC.

How does jquery make a method fire only once?

In jquery, you can use the one() method to make the jquery event execute only once. Here is an example of clicking on the p tag text to pop up the p tag content. Let's see how to make the jquery event execute once. Examples are as follows:

1. Create a new html file named test.html to explain how to make jquery event execute once. Import jquery.min.js library file, successfully load the file, can use the method in jquery. Create a line of text using the p tag with the text "This is a test text" and set its class to mypp.

2. In the js tag, when the page is loaded, obtain the p element object through class(mypp), bind the click event to the object using the one() method, and execute the function() method once when the p element is clicked.

In the function() method, use $(this) to obtain the p-tag object, use the text() method to obtain the value in the p-tag, store the value in the ny variable, and use the alert() method to output the obtained content.

Open the test.html file in your browser and click on the text to see the effect.

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