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Most people do not understand the knowledge points of this article "how to find HTML elements", so the editor summarizes the following content, detailed content, clear steps, and has a certain reference value. I hope you can get something after reading this article. Let's take a look at this "how to find HTML elements" article.

JavaScript finds the HTML element

Method description

Document.getElementById (id) finds the element through the element id

Document.getElementsByTagName (name) looks for elements by marking signatures

Document.getElementsByClassName (name) looks for elements by class name

Change the HTML element

Method description

Element [XSS _ clean] = new html content changes the inner HTML of the element

Element.attribute = new value change the attribute value of the HTML element

Element.setAttribute (attribute, value) changes the attribute value of the HTML element

Element.style.property = new style changes the style of the HTML element

Add and remove elements

Method description

Document.createElement (element) create HTML element

Document.removeChild (element) deletes the HTML element

Document.appendChild (element) add HTML element

Document.replaceChild (element) replaces the HTML element

[xss_clean] (text) writes to HTML output stream

Add event handlers

Method description

Document.getElementById (id). Onclick = function () {code} add event handlers to the onclick event

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