How can I strip text from string?

Question

I have one variable holding single line string which is html element like this.

var des = "<p> --Sometext before-- FI: This is fi name, This is fi manufacturer <br /> SE:This is se name, This is se manufacturer <br /> EN: This is en name, This is en manufacturer</p>";

I want to select everything after FI: until comma sign into one variable and after comma sign until
tag into another variable. Also for SE: and EN: too.

For example, result will be like this.

    var fi_name         = "This is fi name";
    var fi_manufacturer = "This is fi manufacturer";
    var se_name         = "This is se name";
    var se_manufacturer = "This is se manufacturer";
    var en_name         = "This is en name";
    var en_manufacturer = "This is en manufacturer";

Note, the string change dynamically but still have same pattern.

For example:

<p> --Sometext before-- FI:[name],[manufacturer]<br/ >SE:[name],[manufacturer]<br/ >FI:[name],[manufacturer]</p>

You can have a look at demo in JsFiddle.

Now it's throwing null error.

Edited v v v

It's not working in live website. The des variable is fully look like this. Please see http://jsfiddle.net/AM8X2/ It's throwing null again.

Answer 1

You can just look for the specified pattern and extract the relevant information from there:

var des = "<p>FI: This is fi name, This is fi manufacturer <br /> SE:This is se name, This is se manufacturer <br /> EN: This is en name, This is en manufacturer</p>";

var f = function(w, s) {
    return new RegExp(w + ':([^,]+)').exec(s)[1];
}

fi = f('FI', des);
se = f('SE', des);
en = f('EN', des);

w + ':([^,]+)' can be explained as: get me the value after the colon of w in s

here is the updated fiddle.

---

A more complete solution, one that handles all HTML tags would be the following:

var f = function(w, s) {
    var el = document.createElement('div'), arr;
    el.innerHTML = s;

    arr = (new RegExp(w + ':([^\n]+)').exec(el.innerText)[1]).split(',');

    return {
        manufacturer: arr[1],
        name: arr[0]       
    }
}

fi = JSON.stringify(f('FI', des));
se = JSON.stringify(f('SE', des));
en = JSON.stringify(f('EN', des));

The fiddle for this is here

To access any of these in variables (without the JSON.stringify(), the direct method return, i.e. f('SE', des)), you would do:

// for fi manufacturer
fi.manufacturer

// for en name
en.name

// etc..

in my opinion, by using this, you have a much more modular approach, and less chance of error.