Can variables be pulled out of functions

Apocolypse2005 · July 6th, 2006, 07:34 AM

If i have a function such as this:

function song_check_song(song, split_song, split_index){
    var x=0
    document.write('<html><body>');
    document.write('There are ' + split_index + ' words<br>');
    for (x=0; x<split_index;x++) {
    document.write(split_song[x].charAt(0).toUpperCase());
    var y=1;
    for (y=1; y<split_song[x].length; y++){
    document.write(split_song[x].charAt(y).toLowerCase());
    }
    document.write('&nbsp');
    }
    document.write('<br><form><input type="button" onClick="javascript:document.location("N:\\Music Manager\\Music Centre.html");"></form>')
    document.write('</body></html>');
}

And say I want to pull out the end result of the for statment in bold in a variable format for later use, how would I go about soving this problem??

interrupt · July 7th, 2006, 10:06 AM

Apocolypse

You could store the variable's value in a hidden field in your document. Then you can reference the value of the hidden field later on.

So in your markup:

<input type = "hidden" id = "myHiddenField">

Then in your script:

document.getElementById("myHiddenField").value = myForLoopVar

HTH
Joe

panacea · July 12th, 2006, 05:37 AM

What about pulling the bolded code out and putting it in its own function? Then you can either call that function from elsewhere in your code, or you could have a controller function (a 3rd function) that would call the bolded code function, store it as a Javascript variable (or as a hidden form field, as Joe/interrupt suggested), and then pass the bolded code as a parameter to your existing function.

With respect to Joe's suggestion, you could do the same thing more efficiently by simply defining a var inside a Javascript block (outside of a function declaration) and setting that var to the generated HTML. Your var would then be accessible to all Javascript functions by name. By using a hidden form field, accessibility would require looking up the data off of the form, and also complicating your DOM with unneccessary form fields. Both ways would work perfectly though :).

Jon Emerson
http://www.jonemerson.net/

Apocolypse2005 · July 21st, 2006, 05:16 PM

could you make a that code up and then incorporate it within the function so i could see how it is down please, tahnkyou very much for you suggestions!

------------------------------------------------
Apocolypse2005
Always ready and waiting to help!