How to use charAt() in javascript

In JavaScript, the charAt() method can be used to obtain and return the character at the specified position. The syntax is "string.charAt(index)"; the parameter "index" is used to specify the position of the character in the string. It is a numeric value, ranging from "0~string length-1".

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

The charAt() method returns the character at the specified position. (Note: The first character position is 0, the second character position is 1, and so on.)

Syntax:

string.charAt(index)

index: required parameters; A number that represents a position in a string, that is, the position of a character in the string.

Return value: String type, returns the character at the specified position.

Example: Return the last character in the string

var str = "HELLO WORLD";
var n = str.charAt(str.length-1);

Rendering:

[Recommended learning: javascript advanced tutorial]

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