JavaScript replace doesn't work

Question

function areaMe(area) {
    var barea = $('#barea').val();
    if (barea.indexOf(area) != -1) {
        alert ("..." + barea + "..." + area + "...");
        barea.replace(area, "cu"); // Remove
        alert ("..." + barea + "..." + area + "...");
    }
    else {
        barea += area + ' '; // Include.
    }
    $('#barea').val(barea);
}

score 58 · Accepted Answer · answered Dec 11 '09 at 21:44

58

barea = barea.replace(area, "cu")

You need to assign it since String.prototype.replace isn't a mutator method.

answered Dec 11 '09 at 21:44

meder omuraliev

183,342
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3

Why doesn't the [MDN page](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replace) mention this? – doABarrelRoll721 Feb 24 '16 at 06:33
o gosh thanks hehehe – Diogo Garcia May 03 '18 at 21:08

score 9 · Answer 2 · answered Dec 11 '09 at 21:44

9

You need to assign the replaced value back to your variable:

barea = barea.replace(area, "cu");

answered Dec 11 '09 at 21:44

Gumbo

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844

score 0 · Answer 3 · answered Dec 12 '09 at 02:12

0

barea = barea.replace(area, "cu")

answered Dec 12 '09 at 02:12

WisdomFusion

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12

JavaScript replace doesn't work

3 Answers3

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