Javascript match part of url, if statement based on result - Stack Overflow

admin管理员组

文章数量:1291047

Here is an example of the url i'm trying to match: .aspx

What im trying to match is http: //store.mywebsite/folder-1 except that "folder-1" will always be a different value. I can't figure out how to write an if statement for this:

Example (pseudo-code)

if(url contains )
do this

else if (url contains )
do something else

etc

Here is an example of the url i'm trying to match: http://store.mywebsite./folder-1/folder-2/item3423434.aspx

What im trying to match is http: //store.mywebsite./folder-1 except that "folder-1" will always be a different value. I can't figure out how to write an if statement for this:

Example (pseudo-code)

if(url contains http://store.mywebsite./folder-1)
do this

else if (url contains http://store.mywebsite./folder-2)
do something else

etc

• javascript

Share Improve this question Follow edited Jun 7, 2010 at 9:29 Andy E 345k8686 gold badges481481 silver badges451451 bronze badges asked Jun 7, 2010 at 9:27 The Muffin ManThe Muffin Man 20k3030 gold badges126126 silver badges196196 bronze badges

Add a ment  | 

4 Answers 4

Sorted by: Reset to default 5

In the interest of keeping things very simple...

if(location.pathname.indexOf("folder-1") != -1)
{
    //do things for "folder-1"
}

this might give you false positives if the value "folder-1" could be present in other parts of the string. If you are already making sure this is not the case, the provided example should be sufficient.

I would split() the string and check an individual ponent of the url:

var str = "http://store.mywebsite./folder-1/folder-2/item3423434.aspx"

// split the string into an array of parts
var spl = str.split("/");

// spl is now [ http:,,store.mywebsite.,folder-1,folder-2,item3423434.aspx ]
if (spl[4] == "folder-1") {
    // do something
} else if (spl[4] == "folder-2") {
    // do something else
}

Using this method it's easy to check other parts of the URL too, without having to use a regular expression with sub-expression captures. e.g. matching the second directory in the path would be if spl[5] == "folder-x".

Of course, you could also use indexOf(), which will return the position of a substring match within a string, but this method is not quite as dynamic and it's not very efficient/easy to read if there are going to be a lot of else conditions:

var str = "http://store.mywebsite./folder-1/folder-2/item3423434.aspx"
if (str.indexOf("http://store.mywebsite./folder-1") === 0) {
    // do something
} else if (str.indexOf("http://store.mywebsite./folder-2") === 0) {
    // do something
}

Assuming the base URL is fixed and the folder numbers can be very large then this code should work:

var url = 'http://store.mywebsite./folder-1/folder-2/item3423434.aspx'
  , regex = /^http:..store.mywebsite..(folder-\d+)/
  , match = url.match(regex);
if (match) {
  if (match[1] == 'folder-1') {
    // Do this
  } else if (match[1] == 'folder-2') {
    // Do something else
  }
}

Just use URL parting in JS and then you can match URL's against simple string conditions or against regular expressions

本文标签： Javascript match part of urlif statement based on resultStack Overflow