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javascriptdomhref

Is there anything like a "if (href = ...)" command?

In my code I'm trying to do something like this:

if (href = "http://hello.com")
{
whatever[0].click();
}

So the point is, I'm trying to get the script to click on a button only when the window is opened in a specific href.

Solution

  • window.location contains a number of interesting values:

    hash ""
host "stackoverflow.com"
hostname "stackoverflow.com"
href "http://stackoverflow.com/questions/21942858/is-there-anything-like-a-if-href-command"
pathname "/questions/21942858/is-there-anything-like-a-if-href-command"
port ""
protocol "http:"
search ""

    so, in your example, that would be:

    if (window.location.hostname === "hello.com") {
}

    Or, what you probably want to do since you know the domain, is use the pathname:

    if (window.location.pathname === '/questions/21942858/is-there-anything-like-a-if-href-command') {
}

    window.location.toString() returns the full URL (ie. what you see in your address bar):

    >>> window.location.toString()
"http://stackoverflow.com/questions/21942858/is-there-anything-like-a-if-href-command/21942892?noredirect=1#comment33241527_21942892"

>>> window.location === 'http://stackoverflow.com/questions/21942858/is-there-anything-like-a-if-href-command/21942892?noredirect=1#comment33241527_21942892'
true

    I've always avoided this, since 1) It breaks when you change protocols (http/https) 2) Breaks when you run your script on another domain. I would recommend using the pathname.

    Also see MDN.

    Bonus tip

    Your example does this:

    if (href = "http://hello.com")

    You use ONE =, which is assignment, not comparison. You need to use == or === (this is a very common mistake, so be on the lookout for it!)