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The following JavaScript code parses and stores URL variables into a hash variable:

// Read a page’s GET URL variables and return them as an associative array.
function getUrlVars()
{
var vars = [], hash;
var hashes = window.location.href.slice(window.location.href.indexOf(‘?’) + 1).split(‘&’);

for(var i = 0; i < hashes.length; i++)
{
hash = hashes[i].split(‘=’);
vars.push(hash[0]);
vars[hash[0]] = hash[1];
}

return vars;
}

I updated this code to instead write the URL variables into JavaScript global variables:

// Read a page’s GET URL variables and write them as Global variables.
function getUrlVars()
{
var hashes = window.location.href.slice(window.location.href.indexOf(‘?’) + 1).split(‘&’);

for(var i = 0; i < hashes.length; i++)
{
hash = hashes[i].split(‘=’);
window[hash[0]]=hash[1];
}
}

via Get URL Variables – JavaScript – Snipplr.

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