Jquery line break replace with br tag isn't working?

Question

I have following jQuery with \n to be replaced with <br /> tag.

var msg = JSON.parse(ev.data)
var test = msg.message;
test.replace(/\n/, "<br />");
//OR
test.replace(/\n/g, "<br />");
//OR
test.replace(/\\n/g, "<br />");

alert(test);

I am unable to get linebreak. I tried all of them but failed. I think string test is not going through replace function.

score 1 · Answer 1 · answered Oct 21 '15 at 06:06

1

You need to assign the return value to the variable, replace() will not update the variable

var test = "good\nmorning";
test = test.replace(/\n/g, "<br />");
//--^^^----- update variable `test` with returned value
alert(test);

answered Oct 21 '15 at 06:06

Pranav C Balan

113,687
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Sorry, I tried this and also not working.. – tashi Oct 21 '15 at 06:17
@tashi : run the code snippet – Pranav C Balan Oct 21 '15 at 06:18
@tashi : can you provide a http://jsfiddle.net – Pranav C Balan Oct 21 '15 at 06:19
http://jsfiddle.net/X6fjY/ – tashi Oct 21 '15 at 06:23
It behaves different in here. Even without going replace function. It will already broken when I do alert. – tashi Oct 21 '15 at 06:24
1

@tashi: Your example does not even try to replace line breaks. It does something completely different. – Felix Kling Oct 21 '15 at 06:25
I forgot to mention, test is just converted with JSON. – tashi Oct 21 '15 at 06:34
1

@tashi: We can't help if you don't provide an actual, complete example. Again, your jsFiddle example has nothing to do what you asked in the question, and the issue in the code example in the question is addressed by this answer. If that doesn't help you, then you have a different problem or different code. – Felix Kling Oct 21 '15 at 06:39
var test string is coming from JSON. like ***var msg = JSON.parse(ev.data) var test = msg.message;***. – tashi Oct 21 '15 at 06:44

Omidam81 · Answer 2 · 2015-10-21T07:28:05.183

1

except last one, all of them working.

    var test = "good\nmorning";
    test1  = test.replace(/\n/, "<br />");

    console.log(test1);
    //OR
    test2 = test.replace(/\n/g, "<br />");
     console.log(test2);    
    //OR
    test3  = test.replace(/\\n/g, "<br />");
    console.log(test3);

edited Oct 21 '15 at 07:28

answered Oct 21 '15 at 06:06

Omidam81

1,887
12
20

The last one (`test = test.replace(/\\n/g, "
");`) is incorrect btw. – Felix Kling Oct 21 '15 at 06:27
All of them not working for me. – tashi Oct 21 '15 at 06:29
this is just copy of his code :) – Omidam81 Oct 21 '15 at 07:25
@Omidam81 What is the point of doing that? – Ian Kemp Oct 21 '15 at 07:28
@ian-kemp, i just want to show the correct method of using javascript replace, it not about regular expression and other things. – Omidam81 Oct 21 '15 at 07:30

Jquery line break replace with br tag isn't working?

2 Answers2