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This article mainly introduces "jquery how to judge what element type". In daily operation, I believe that many people have doubts about how jquery judges what element type is. The editor consulted all kinds of data and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubt of "how jquery judges what element type". Next, please follow the editor to study!

In jquery, you can use the prop () method to determine what type an element is, which is used to set or return the properties and values of the selected element, or to retrieve attribute values. The parameter is set to nodeName to get the type of the element, and the syntax is "element object .prop ('nodeName')".

The operating environment of this tutorial: windows10 system, jquery3.2.1 version, Dell G3 computer.

How does jquery determine what element type it is?

In jquery, you mainly use the prop () method to get the type of the element through nodeName.

The prop () method sets or returns the properties and values of the selected element.

When this method is used to return an attribute value, it returns the value of the first matching element.

When this method is used to set attribute values, one or more attribute / value pairs are set for a collection of matching elements.

Note: the prop () method should be used to retrieve property values, such as DOM properties such as selectedIndex, tagName, nodeName, nodeType, ownerDocument, defaultChecked, and defaultSelected.

Examples are as follows:

Create a new html file, named test.html, to explain whether jquery determines whether the type of the obtained element is div or something else. Introduce the jquery.min.js library file and load it successfully before you can use the methods in jquery. Create a module using the div tag and set the id of the div to mydiv, which is mainly used to obtain the div object through that id below.

Use the button tag to create a button with the name "get element type". Bind the onclick click event to the button button, and execute the gettype () function when the button is clicked.

In the js tag, create the gettype () function. Within the function, get the div object through id (mydiv), and use the prop () method to get the value of nodeName, which holds the type name of the element. Use the if statement to determine whether the nodename value is div, and if it is div, prompt "element type is div", otherwise, prompt "element type is XXX".

Open the test.html file in the browser and click the button to see the effect of the implementation.

At this point, the study on "how to determine what element type jquery is" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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