Retrieve information from an external source and subsequently make alterations to it

If a certain external site returns a string like "cost is 10$", is it possible for me to display it as "price:10$" on my own website using only Javascript? The external site could be something like Facebook.com. My website, of course, belongs to me.

Hello everyone. I am making edits to a question where I need to retrieve data FROM an external site. Simply modifying strings is easy, but what I really need is something like this:

var str = GetData("http://facebook.com/blablbal");

str.Replace('blbablab','blabal');

ShowToUser(str);

I hope that makes sense. Excuse me if my English isn't perfect - it's not my native language.

What I mean is retrieving data using XMLHttpRequest or iframe and then manipulating it. Unfortunately, one of the moderators edited my question and changed the title without understanding my actual query.

Here is a concrete example:

http://vkontakte.ru/share.php?act=count&index=[index]&url=http://talismansochi2014.ru/grandfather_frost/go.php returns

VK.Share.count(0, 8718);

I want to extract the number 8718 and display it to the user. And I can only use JS. I cannot make requests from the server and then return a webpage.

Do I need to reformulate my question or provide additional information?

javascript

Answer №1

Here is a quick solution:

"The cost of the item is 10$".replace(/The cost of /, "The price is:");

By using this code, you will get "The price is: 10$".

Answer №2

When the structure remains consistent, you can simply use this approach:

let info = "value:" + currentString.slice(6);

Answer №3

Give this a shot

<script type="text/javascript">

var text="the price is 10$";
document.write(text.replace("the price is","total cost:"));

</script>

Answer №4

Here's a suggestion for you: 

alert('price:'+('cost is 10$').match(/\d+/)+'$')
, simply substitute the phrase cost is 10$ with a variable that stores this exact string

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