JavaScript multiline string decode

Question

I have a string:

&lt;Grid&gt;&lt;Description&gt;LINE 1
LINE 2
LINE 3
LINE 4
&lt;/Description&gt;&lt;&lt;/Grid&gt;

I need it to be decoded with line breaks. I found solution:

function decodeString(stringToDecode) {
    if (!stringToDecode) {
        return stringToDecode;
    }
    return $('<div />').html(stringToDecode).text();
}

But it makes single line and replaces all the line breaks with spaces.

DanielB · Accepted Answer · 2011-05-10 10:51:00Z

1

you may use the following to replace your line breaks with <br /> tags an then set the HTML:

return $('<div />').html(stringToDecode.replace(/\n/, '&lt;br /&gt;')).text();

answered May 10, 2011 at 10:51

DanielB

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2 Comments

Sergey Metlov Over a year ago

I improved your solution:

var tempTagName = 'LineBreak'; var decodedString = $('<div />').html(stringToDecode.replace(/\n/g, '&lt;' + tempTagName + "/&gt;\r\n")).text(); return decodedString.replaceAll('<' + tempTagName + '/>', '\r\n');

tothemario Over a year ago

The line break Regexp should be /(\r\n|\n|\r)/gm textfixer.com/tutorials/javascript-line-breaks.php

Billy Moon · Accepted Answer · 2011-05-10 10:58:53Z

1

function decodeString(stringToDecode) {
    return stringToDecode ? $('<div />').html(stringToDecode.replace(/[\n\r]/g, "<br> \r\n")).text() : ""
}

answered May 10, 2011 at 10:58

Billy Moon

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Comments

JK. · Accepted Answer · 2011-05-10 10:50:20Z

-1

Your sample has CR/LF - but that is not a line break in HTML. You need to replace it with a valid HTML line break ie the < br > tag.

Your function has a strange if statement that does not make much sense. Why return stringToDecode when you've just proven it is null? Also, $('<div />').html(stringToDecode).text() will not do anything helpful.

Try something like this:

function decodeString(stringToDecode) {
if (!stringToDecode) {
    return "";
}
var regX = /\\n/g;
var replaceString = '<br> \\n';
return stringToDecode.replace(regX, replaceString);
}

answered May 10, 2011 at 10:50

JK.

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