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Let's say I have one page that displays the number "5". The page source code looks like this:

5

Now, on a different web page, I want to save the contents of this page (5) to a Javascript variable. I'm pretty sure this can be done by using jQuery/AJAX to access the external page, and then grab the contents, but I'm unsure as to how I would write the value into a Javascript variable.

How would you approach this? What code should be used?

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Make a webservice which returns the 5. –  Travis J Jun 14 '13 at 17:49

2 Answers 2

up vote 1 down vote accepted

You can do this using the .get() function, along with a callback:

function get_data(callback) {
    $.get('get.php', function (data) {
        callback(data);
    });
}

function use_data(param) {
    alert(param);
}

You can now call the get_data function with a callback function. You can do whatever you want to this variable inside that callback, for now, it simply alerts.

get_data(use_data);
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Thanks for this :) –  goddfree Jun 14 '13 at 18:10
up vote 1 down vote

You can do it using .get() function

var distinctTaxis = 0;
$.get('get.php', {"distinct": "yes"}, function (data) {
    distinctTaxis = data;
});
share|improve this answer
    
This isn't working. I am doing this: var distinctTaxis = 0; $.get('get.php?distinct=yes', function (data) { distinctTaxis = data; }); alert(distinctTaxis); but the alert still returns 0. –  goddfree Jun 14 '13 at 18:00
    
please see the edited post, you need to pass parameters in the method –  Sampriti Panda Jun 14 '13 at 18:03
2  
This is an Async function, throwing an alert immediately after isn't going to work. You'll need a callback. –  tymeJV Jun 14 '13 at 18:04
    
Alright, thanks for that. By callback, you mean like pressing a button to display the alert? –  goddfree Jun 14 '13 at 18:06

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