Js method for getting the last string _ javascript tips-js tutorial

This article summarizes four methods for obtaining the last character of a string in JavaScript code. The example is provided, which is very simple and practical. We recommend it to you here. Method 1: Use the charAt method of the String object

The charAt () method returns characters at a specified position.

The Code is as follows:

Str. charAt (str. length-1)

Please note that JavaScript does not have a character data type different from the string type, so the returned character is a string with a length of 1

Method 2: Use the substr method under the String object

The substr () method extracts a specified number of characters starting with the start subscript from a string.

The Code is as follows:

Str. substr (str. length-1, 1)

Important: ECMAscript does not standardize this method, so it is opposed to using it.

Important: in IE 4, the value of start is invalid. In this BUG, start specifies the position of 0th characters. (Www.jb51.net) in a later version, this BUG has been fixed.

Method 3: Use the split method under the String object

The split () method is used to split a string into a string array.

The Code is as follows:

Var str = 123456 ″;
Spstr = str. split ("");
Spstr [spstr. length-1];

Method 4: RegEx

The Code is as follows: