What are the methods for positioning elements in JavaScript?

Methods to locate elements: 1. Use getElementById("id"); 2. Use "name"; 3. Use "element tag name"; 4. Use "class"; 5. Use "css selection" device".

The operating environment of this tutorial: Windows 10 system, JavaScript version 1.8.5, Dell G3 computer.

What are the methods for locating elements in JavaScript

Except for the id, which locates a single element element object, everything else is returned by elements. It is a list object

• 1. Get by id

document.getElementById(“id”)

• 2. Get by name

document.getElementsByName(“Name”)

returns list

• 3 .Select elements by tag name

document.getElementsByTagName(“tag”)

• 4.Select elements by CLASS class

document.getElementsByClassName("class")

Compatibility: IE8 and below browsers do not implement the getElementsByClassName method

• 5. Select elements through CSS selectors

document.querySelectorAll("css selector")

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