javascript delete last character of string

Delete method: 1. Use substr(), the syntax is "substr(0, string length-1);"; 2. Use substring(), the syntax is "substring(0, string length-1) ” or “substring(0,str.lastIndexOf('character'))”.

The operating environment of this tutorial: Windows 7 system, ECMAScript version 5, Dell G3 computer.

js three ways to delete the last character of a string

For example, the string is as follows

var basic = “abc,def,ghi,”;

Method 1:

basic = basic.substr(0, basic.length - 1);

substr() method can extract the specified number of characters starting from the start subscript in the string.

Method 2:

basic = basic.substring(0, basic.length - 1);

substring() method is used to extract the characters between two specified subscripts in the string.

Method 3:

basic = basic.substring(0, basic.lastIndexOf(','));

lastIndexOf() method can return the position where a specified string value last appears, from the specified position in a string backwards Search before.

[Recommended learning: javascript advanced tutorial]

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