Question

I have a querystring which looks like this page3.html?redesigndata=value which it appears if its redirected from page1.html and page3.html?new=yes or no when redirected from page2.html. Here is the code I’m using to find out what the querystring is and do some functions on page3.html

var locurl = window.location.search;
if (locurl.substring(0, 13) === '?redesigndata') {
  alert("redesign!");
} else if (locurl.substring(0, 4) === '?new') {
  visit = locurl.substring(5);
  alert("somthing!");
  if (visit === 'yes') {
     alert("first!");
  } else if (visit === 'no') {
    alert("again!");
  }
}

but I don’t get any alerts when I try this script and I cant find out what’s wrong with it.

Answer 1

Try using this function

function getQueryString() {
  var result = {}, queryString = location.search.substring(1),
      re = /([^&=]+)=([^&]*)/g, m;

  while (m = re.exec(queryString)) {
    result[decodeURIComponent(m[1])] = decodeURIComponent(m[2]);
  }

  return result;
}

// ...
var myParam = getQueryString()["myParam"];

Check like this

if(getQueryString()["redesigndata"] != "")