JavaScript

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JavaScript : GET variable from query string

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fullURL = parent.document.URL
GetVar = fullURL.substring(fullURL.indexOf('?')+xxx, fullURL.length)

? = variable name
xxx = length of GET variable name.

Example.

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fullURL = parent.document.URL
GetVar = fullURL.substring(fullURL.indexOf('topicid')+7, fullURL.length)

Written by Komkid on August 5th, 2009 with no comments.
Read more articles on JavaScript and Programming.

JavaScript : Get current year

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var today = new Date();
ThisYear = today.getYear()+0;
if(ThisYear <= 1999){
     ThisYear = ThisYear - 100 + 2000;
}

Written by Komkid on August 5th, 2009 with no comments.
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JavaScript : Validate for empty input

Don’t :

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if (form.input.value == "")

Do :

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if (form.input.value.length == 0)

or

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if (form.input.value.replace(/\s+$/, "") == "")

Written by Komkid on August 5th, 2009 with no comments.
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JavaScript : Form focus on load

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/* This script and many more are available free online at
The JavaScript Source!! http://javascript.internet.com
Created by: Lee Underwood | http://javascript.internet.com/ */

function getFocus() {
  // place the id below of the field you want to have focus upon page load
  var focusHere = document.getElementById("yourName");
  focusHere = focusHere.focus();
}

// Multiple onload function created by: Simon Willison
// http://simonwillison.net/2004/May/26/addLoadEvent/
function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

addLoadEvent(function() {
  getFocus();
});

Written by Komkid on August 5th, 2009 with no comments.
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