CODEWITHSUNDEEP
javascriptregex
Man Behind
Man Behind

Reputation: 21

multiple occurence in a string

I have a string in which I want to replace an occurence which I am not being able to achieve following is the code

var code="user_1/has some text and user_1? also has some text";
newcode=code.replace(/user_1//g,'_');

One more thing if i have to replace a string from another string how to do? example.

var replacestring="user_1";
var code="user_1/some value here for some user";
var newcode=code.replace(/+replacestring+/g,'_');

Upvotes: 1

Views: 87

Answers (2)

Selvakumar Arumugam
Selvakumar Arumugam

Reputation: 79830

Escape the / in the regex using \

newcode=code.replace(/user_1\//g,'_');

For your comment

@Vega I have another confusion. can i use a value in a string to pass instead of user_1/ for replacement? what would be the syntax?

You can initialize RegEx object like below,

var userName = 'user_1/';
var newcode = code.replace(new RegExp(userName, 'g'), '_');

Read More about RegEx

Upvotes: 1

gdoron
gdoron

Reputation: 150253

/ is a special char thus needs to be escaped with \ before it:

var code = "user_1/has some text and user_1? also has some text";
var newcode = code.replace(/user_1\//g, '_');
alert(newcode);​

Live DEMO

if you want to replace all user_1, use this:

var code = "user_1/has some text and user_1? also has some text";
var newcode = code.replace(/user_1/g, '_');
alert(newcode);​

Live DEMO

Upvotes: 1

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