JS gets the last character code of the string

Method One: Using the Charat method under String Object

The CharAt () method returns the character at the specified position.

The code is as follows	Copy Code
Str.charat (str.length–1)

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

Method Two: Using the Substr method under the String object

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

The code is as follows	Copy Code
Str.substr (str.length-1,1)

Important: ECMAscript does not standardize the method and is therefore opposed to its use.

Important: In IE 4, the value of the parameter start is invalid. In this BUG, start sets the position of the No. 0 character. In later versions, this BUG has been fixed.

Method Three: Using the Split method under String object

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

The code is as follows	Copy Code
var str = "123456″; Spstr = Str.split (""); SPSTR[SPSTR.LENGTH-1];

Method Four: Just fix it

code is as follows	copy code
<script Type= "Text/javascript"  //<![ cdata[     var s = "Nasofj;n234n41;v";     alert ("String:" +s+ "nn" + "LaStone:" + S.replace (/^ (. *[n]) *.* (. | N) $/g, "$");  //] </script>