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This article mainly explains "jquery how to obtain the number of elements", the content of the article is simple and clear, easy to learn and understand, now please follow the editor's ideas slowly in depth, together to study and learn "jquery how to obtain the number of elements" bar!

Jquery gets the number of elements: 1, use the "$(element)" statement to get the specified element object; 2, use the length attribute to get the number of elements in the specified element object, the syntax is "element object .length;".

The operating environment of this tutorial: windows7 system, jquery1.10.0 version, Dell G3 computer.

How does jquery get the number of elements

In jquery, you can get the number of specified elements by getting the specified element object and using the length attribute. Here is an example of how jquery can get the number of elements.

1. Create a new html file, named test.html, to explain how jquery gets the number of elements. Use div tags to create a module, and within div, use h4 tags to create multiline text. Set the value of the id property of div to mydiv, which is used below to get the div object through this id.

Create a button button, bind the onclick click event to button, and execute the getEleNum () function when the button is clicked.

2. In the getEleNum () function, get the h4 element object through id and element name (h4), use the length attribute to get the number of h4 elements, save it in the num variable, and use the alert () method to output the result.

Open the test.html file in the browser and click the button to view the results.

Thank you for your reading, the above is the content of "how to get the number of elements in jquery". After the study of this article, I believe you have a deeper understanding of how to obtain the number of elements in jquery, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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