How to get the href value on a tag with jquery

jQuery is a widely used JavaScript library. Both web designers and developers use jQuery in their projects. Its main purpose is to make JavaScript programs easier to use and provide more functions and effects. In front-end development, it is often necessary to obtain the href value on the a tag, and jQuery provides a convenient method to achieve this.

Getting the href value on the a tag is a common need. Sometimes we need to update the href value of the a tag to a new link, or perform certain operations when the link is clicked. jQuery provides selectors to operate on DOM elements, the most commonly used of which is the selector $() method.

To get the href value on the a tag, just use the selector to select the a element and use the attr() method to get the href attribute value. The following is some sample code that uses jQuery to get the href value on the a tag:

// 获取单个a标签href值
var href = $('a').attr('href');

// 获取多个a标签href值
$('a').each(function() {
  var href = $(this).attr('href');
  console.log(href);
});

// 当a标签被点击时获取href值
$('a').on('click', function() {
  var href = $(this).attr('href');
  console.log(href);
});

Code analysis:

The first example uses the $() selector to get the first a in the page tag, and use the attr() method to obtain its href attribute value. If your page has multiple a tags, this method will return the href attribute value of the first matching a tag.

The second example loops through each a tag and obtains its href attribute value by using the each() method. Using the each() method allows you to find all the a tags you need to process in the document.

The third example shows how to obtain the href attribute value of a tag when it is clicked. When clicking, use the on() method to listen to the event. this refers to the currently clicked a tag, which is converted into a jQuery object through $(this), and the attr() method is used to obtain its href attribute value.

Summary:

In front-end development, obtaining the href value on the a tag is a very common requirement. jQuery provides simple ways to achieve this and allows you to easily access and manipulate the value. Use the selector to select the a tag to be operated and use the attr() method to obtain its href attribute value.

The above is the detailed content of How to get the href value on a tag with jquery. For more information, please follow other related articles on the PHP Chinese website!