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How to change attribute name in jquery
- PHPzOriginal
- 2023-04-17 09:52:11560browse
jQuery is a very popular JavaScript library that facilitates developers to use various effects and animations in web pages. Among them, changing the properties of an element is one of the most common operations. In jQuery, we can change the attribute name of an element using the attr() method.
Using the attr() method to change the attribute name has two parameters, the first is the attribute name to be changed, and the second is the new attribute name. Here is a simple example:
// HTML 代码：
// <input type="text" id="input1" value="Hello World">
$("#input1").attr("type", "password"); // 更改 input1 元素的 type 属性为 password
In this example, we select the input element with the id "input1" and change its type attribute to password. After using the above code, the input element will become a password box.
Similarly, we can also change other attributes, such as value and checked. The following is an example of changing the value attribute:
// HTML 代码：
// <input type="text" id="input1" value="Hello World">
$("#input1").attr("value", "new value"); // 更改 input1 元素的 value 属性为 new value
In the above example, we changed the value attribute of the input1 element from "Hello World" to "new value".
In addition to using the attr() method, you can also use the prop() method to change the attributes of an element. The difference between the two is that the attr() method changes HTML attributes, while the prop() method changes DOM attributes. This means that if the attribute you need to change is an HTML attribute, you should use the attr() method. If you need to change a DOM property, you should use the prop() method.
In addition, it should be noted that not all attributes can be changed through the attr() or prop() method. For example, you cannot change the type attribute of an input element to change the element's type, nor can you change the src attribute of an img element to change its image link. Otherwise, it will not work properly.
In practice, changing the attribute name of an element is a very common operation. Using jQuery's attr() and prop() methods, you can easily change an element's attributes without having to write a lot of JavaScript code.
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