Problem: Your site has a url that looks something like this: http://www.bart.gov/schedules/quickplanner?orig=12TH&addr1=&dest=16TH&addr2=&type=departure&date=2013-12-21&time=9%3A00%20am&tab=2
You want to break it down into parts, for reasons that I’ll leave to your imagination.
Turns out that all the info you need is conveniently stored in the window.location object. Here’s the keys stored in the window.location object:
ancestorOrigins constructor hash host hostname href origin pathname port protocol search
You can find out what each of them hold using this simple for loop:
//print out all window.location variables.
var loc = window.location;
for(var aKey in loc){
console.log(aKey+":",loca[aKey]);
}
For example, if the url of the site is http://www.bart.gov/schedules/quickplanner
you’ll find that
window.location.protocol = "http" window.location.host = "www.bart.gov" window.location.pathname = "schedules/quickplanner
The window.location.search variable holds the part of the string that’s after the pathname.
That is, in the BART url above,
window.location.search = ?orig=12TH&addr1=&dest=16TH&addr2=&type=departure&date=2013-12-21&time=9%3A00%20am&tab=2;
You can parse it into parts like so:
function get_search_from_url (query) {
if(!query || query.length==0) return query; // empty query string was input.
var query_string = {};
// get rid of the '?' at the beginning
query = query.chartAt(0)=='?' ? query.substring(1,query.length) : query;
// get the different parts
var vars = query.split("&");
for (var i=0;i<vars.length;i++) {
var pair = vars[i].split("=");
pair[0] = decodeURIComponent(pair[0]);
pair[1] = decodeURIComponent(pair[1]);
// If first entry with this name
if (typeof query_string[pair[0]] === "undefined") {
query_string[pair[0]] = pair[1];
// If second entry with this name
} else if (typeof query_string[pair[0]] === "string") {
var arr = [ query_string[pair[0]], pair[1] ];
query_string[pair[0]] = arr;
// If third or later entry with this name
} else {
query_string[pair[0]].push(pair[1]);
}
}
return query_string;
};
It basically does the opposite of jquery’s .param function.
adilapapaya 