Checking if a external 3rd party site exists

Question

Users are able to enter a URL into a text field, I would like to add a jQuery based feature that would be able to check if a page at least exists so that I could warn a user if they may have accidentally entered an incorrect URL, before they hit "save"

Currently I am trying to use the following code, though it seems to always return the "Error: Does not exist" message:

$('#Inventory_edocsUrl').blur(function(){
    $.ajax({
        url:$('#Inventory_edocsUrl').val(),
        type:'GET',
        success: function()
        {
            console.log('Success, file exists!');
        },
        error: function()
        {
            console.log('ERROR:Does not exist');
        }
    });
});

I tested with http://google.com as a test url in the text field and it still returned the error. Upon switching the url to google.com (not http), I got the same error message along with another error message:

GET http://localhost/inventory/web/inventory/google.com 404 (Not Found)

It makes sense that this second version does not work as there is no http:// and therefore the error should be returned, but I don't see why the first correct url is returning the programmed error message, but is actually returning no console errors like the second trial.

Is there something I am doing wrong?

@Lix I'm trying to find out what is wrong with what I am specifically doing. — ComputerLocus, Jul 29 '13 at 14:02
@Lix most of the other solutions I am finding do not seem to work with external URL's. — ComputerLocus, Jul 29 '13 at 14:05
That's the [same-origin policy](http://en.wikipedia.org/wiki/Same_origin_policy). You need a proxy on your server. — JJJ, Jul 29 '13 at 14:06
@Juhana So, does it work as long as they are on the same domain? Because as of right now I only need to check if documentation URL's are correct, which are on a totally different server here, but still are accessed from the same domain, just a different directory. — ComputerLocus, Jul 29 '13 at 14:08
@Juhana Well, technically you answered my question of what was wrong, so feel free to make this an answer and I will accept that. — ComputerLocus, Jul 29 '13 at 14:21
I can't answer a question that's closed, but it's a duplicate anyway. — JJJ, Jul 29 '13 at 14:52
@Juhana ah oh well, it wasn't marked as a duplicate before this. — ComputerLocus, Jul 29 '13 at 14:53

score -1 · Answer 1 · answered Jul 29 '13 at 13:57

-1

$.ajax({
    statusCode: {
        404: function() {
            alert("page not found");
        }
    }
});

Form jQuery.ajax() documentation....

answered Jul 29 '13 at 13:57

Virus721

8,061
12
67
123

score -2 · Answer 2 · edited Jul 29 '13 at 14:01

-2

Use:

url:$('#Inventory_edocsUrl').text();

Instead of:

url:$('#Inventory_edocsUrl').val();

edited Jul 29 '13 at 14:01

Josh

2,835
1
21
33

answered Jul 29 '13 at 13:56

Rawlins

61
7

1

*"Users are able to enter a URL into a **text field**"* --> `.val()` is correct. – JJJ Jul 29 '13 at 13:58
No, this is a text field, I know the value is being retrieved correctly. – ComputerLocus Jul 29 '13 at 14:01

Checking if a external 3rd party site exists

2 Answers2