Question

lets say that we are studding a url string:

http:/domain.com/en/#the-file.html/section-4

where i have codified:

http:/domain.com/en/#{html file}/{id of the div}-{level}

this way i can know by

var info = window.location.hash;
var temp = info.split("/");
var url = temp[0];
url = str_replace('#','',url);
var temp1 = temp[1];
temp1 = temp1.split('-');
var seccion = temp1[0];
var nivel = temp1[1];

where

console.log('url: '+url);
console.log('info: '+nivel);
console.log('seccion: '+seccion);

provide me those codified vars

the problem is when, for example, the url is

http://domain.com/es/

that firebug jumps this error:

temp1 is undefined

Any idea how to prevent it?

Answer 1

Instead of using split, I recommend to use a RegExp, which does not break when multiple slashes or hyphens show up.

The code below will always define the variables url, nivel and seccion. If the hash is not existent, these variables will be an empty string.

var info = window.location.hash.match(/^#(.*?)\/(.*?)-(.*)$/),
    url="", nivel="", seccion="";
if (info) {
    url = info[1];
    nivel = info[2];
    seccion = info[3];
}