1

How we can delete some special character from a string by javascript

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2 Answers 2

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5

The best way is to replace it, either using a string or regular expression.

String:

// JavaScript Document
var string = 'Hello world!';
alert( string.replace( 'world', '' ) ); // Alerts "Hello !"

Regular Expression:

// JavaScript Document
var string = 'Hello world!';
alert( string.replace( /o/, '' ) ); // Alerts "Hell wrld!"
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3 Comments

if i want to remove h, o & w then.
If you want to remove all occurences of h, o and w, use a regular expression that matches for any of those three characters. To do that, wrap the characters in square brackets - e.g. alert ('hello world!'.replace (/[how]/, '')); - I think that's right for Javascript.
@Arpan Steve314 is right, though I've never seen the .replace used directly on a string. /[how]/ is the regular expression you want.
0

Well,

if the string to get cleaned up is mystring;

mysring = mystring.replace(/[^a-zA-Z 0-9]+/g,'');

will remove all charectes other than alpahnumeric from your string. You can modify the regular expression accordingly if you wan tot exclude some special characters from cleaning up.

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