Append string to url based on condition using jQuery

Question

I'm trying to figure out how to add either ?ref=xyz or &ref=xyz depending on whether a question mark is already part of the url (?ref=xyz if no ? is present, or &ref=xyz if there is a ? in the URL)

Here's what I'm trying to do without success, can anyone help me write code that will test for both conditions and append the appropriate string to the end of the URL please?

$('a[href*="domainname"]').attr('href', function(index, attr) {
    if([doesn't contain ?]) {
        return attr + '?ref=xyz';
    } else if([contains ?]) {
        return attr + '&ref=xyz';
    }
});

Thanks,

Osu

ShankarSangoli · Accepted Answer · 2012-01-23 14:33:53Z

2

Use indexOf JavaScript method. Try this.

$('a[href*="domainname"]').attr('href', function(index, attr) {
    if(attr.indexOf('?') == -1) {
        return attr + '?ref=xyz';
    } else{
        return attr + '&ref=xyz';
    }
});

edited Jan 23, 2012 at 14:33

answered Jan 23, 2012 at 14:28

ShankarSangoli

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2 Comments

Osu Over a year ago

Fantastic, I just neeed to update the second part of the expression, works a treat. Need to wait 9 mins to approve the answer, but thank you!

ShankarSangoli Over a year ago

@Osu - Edited my answer, else part doesn't need any condition.

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