How to change the page title with javascript

Method: 1. Use "document.getElementsByTagName("title")[0].innerText = 'value'"; 2. Use "document.title='value'"; 3. Use "$( 'title').html('value')".

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

title is a special node element in HTML, because it can use document.getElementsByTagName("title")[0] to get the title tag of the web page, but it cannot use document.getElementsByTagName("title")[0].innerHtmlUse to change its value. After testing, there are two ways to modify native js, and it can also be easily set in jQuery. Let me introduce it to you below.

innerText method

Through console.log(document.getElementsByTagName("title")[0]), we found that 1fd589692e180fb978cda37041cfc5e2 label, there are only text nodes in the label, so I guess it can only recognize TextNode, so I used innerText to set the value of title, and it succeeded.

document.getElementsByTagName("title")[0].innerText = '需要设置的值';

document.title method

After testing, the value of title can also be set through document.title.

console.log(document.title);      # 可以获取title的值。
document.title = '需要设置的值';    # 设置title的值。

Example

window.onfocus = function () {
 document.title = '恢复正常了...';
};
window.onblur = function () {
 document.title = '快回来~页面崩溃了';
};

We change the value of title when the browser gains focus and loses focus. You can find that the title changes when switching browser tabs.

jQuery method

Of course, if your project relies on jQuery, you can use the jq method to set the two methods in

$('title').html('值')

$('title').text('值')

jq All can be achieved

Summary

In native js we can use innerText, document.title To dynamically modify the title of the web page.

In jq, we can use $('title').html('value') or $('title') .text('value') to modify.

The above is the detailed method of changing browser TITLE with JS. If you find it useful, just bookmark it.

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