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Software

QueryStrings in JavaScript

Sample Use¶

id = queryString("id");

JavaScript Source¶

function PageQuery(q) 
{
    if(q.length > 1) 
        this.q = q.substring(1, q.length);
    else 
        this.q = null;
        
    this.keyValuePairs = new Array();
    if(q) 
    {
        for(var i=0; i < this.q.split("&").length; i++) 
        {
            this.keyValuePairs[i] = this.q.split("&")[i];
        }
    }
    this.getKeyValuePairs = function() { return this.keyValuePairs; }
    this.getValue = function(s) 
        {
            for(var j=0; j < this.keyValuePairs.length; j++) 
            {
                if(this.keyValuePairs[j].split("=")[0] == s)
                return this.keyValuePairs[j].split("=")[1];
            }
            return false;
        }
    this.getParameters = function() 
    {
        var a = new Array(this.getLength());
        for(var j=0; j < this.keyValuePairs.length; j++) 
        {
            a[j] = this.keyValuePairs[j].split("=")[0];
        }
        return a;
    }
    this.getLength = function() { return this.keyValuePairs.length; } 
}
function queryString(key)
{
    var page = new PageQuery(window.location.search); 
    return unescape(page.getValue(key)); 
}