jquery sets attribute attribute

jQuery is a popular JavaScript library used to simplify JavaScript programming. jQuery makes programming easier and smoother. One such operation is to set attributes of an element, called attributes. This article will introduce how to use jQuery to set attributes of elements.

1. Set element attributes

jQuery can set element attributes (attributes) simply and clearly. The following code demonstrates how to set element attributes using jQuery.

// 使用jQuery设置元素属性
$("a").attr("href", "http://www.example.com");

The above code will set the href attribute of the <a></a> element. The first parameter passes the element's attribute name, and the second parameter passes the attribute's value. Element attributes can be easily set using this approach.

2. Getting element attributes

jQuery also supports getting attributes from elements. The following code will show how to use jQuery to get element attributes.

// 使用jQuery获取元素的属性
var link = $("a").attr("href");
// 在控制台上打印元素的href属性
console.log(link);

The above code will get the href attribute of the <a></a> element. Use the var keyword to declare a variable link and assign it to the href attribute of element <a></a>. Then use console.log to print the element's href attribute on the console.

3. Set multiple element attributes

You can also set multiple attributes by using JavaScript objects as parameters. The following code describes how to use JavaScript objects to set multiple element attributes.

// 多个属性设置
$("a").attr({
  "href": "http://www.example.com",
  "title": "Example",
  "target": "_blank"
});

The above code will set three attributes of the <a></a> element: href, title, and target. Add attributes to the object, the object attribute name corresponds to the element attribute name, and the object attribute value corresponds to the value of the element attribute.

4. Remove element attributes

For example, you can use the removeAttr method to easily delete unnecessary element attributes (attributes). The following code will demonstrate how to use the removeAttr method to remove element attributes.

// 删除元素属性
$("a").removeAttr("target");

The above code will remove the target attribute from the <a></a> element. Attributes can be easily removed using the removeAttr method and passing in the name of the attribute of the element that needs to be deleted.

Conclusion:

This article introduces how to use jQuery to set, get, set multiple attributes (attributes) and delete element attributes (attributes). These operations can improve the efficiency and readability of the code. If you need to manipulate multiple elements on a page, jQuery is a very powerful tool that can make the job easier for you.

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