javascript : sending and receiving parameter

[mikedonka]

Hi,

I'm new to javascript, only know the .net environment.
I would like to use javascript on my pages. I guess i wud need some help to do that.

File 1 => a.html
File 2 => b.js
File 3 => c.html

So what i want to do is pass a variable from file 1 to file 3 , but it needs to go thru file 2. so File 1 willl send to File 2 then file 2 will send to file 3.

So this is what i currently have

File 1:

getdelay(2000);

File 2 - (so i belive this code will save the sent value to var delayy?)

function getdelay(ms2) {

    delayy = ms2;
    
}

But then i'm not sure how to send that value from File 2 to File 3.

I will really appreciate it if you can redirect me to the right direction.

Thank You

[nathanwall]

Assuming you are talking about leaving page a.html and going to c.html (and not using iframes or something similar), then you have 3 options:

(1) Send the variable in a hash-style query string:

location.href = 'c.html#!delayy=' + delayy;

Then you'll need to read and parse the query string in c.html.

var hash = location.hash;
if(hash && hash.charAt(0) == '!') {
  var hashInfo = hash.split('=');
    if(hashInfo[0] == '!delayy') {
      delayy = hashInfo[1];
      alert('delayy is ' + delayy);
    }
  }

Note: You could also use a "?" style query string as long as you're using an HTTP server of some kind.

(2) Use a cookie to transfer the variable.

Look up document.cookie for more information on this.

(3) Use web storage.

[mikedonka]

Thank you for the quick reply. I think the best method for me to use will be the hash-style query string. I will give that a try.

thx

[nathanwall]

Part of that needs to be fixed. I didn't realize the # was included in location.hash.

var hash = location.hash;
if(hash && hash.substring(0, 2) == '#!') {
  var hashInfo = hash.split('=');
    if(hashInfo[0] == '#!delayy') {
      delayy = hashInfo[1];
      alert('delayy is ' + delayy);
    }
  }