how to make a box of nxn given in a url?

Tags: javascript,jquery,html,css

Problem :

I am trying to make a grid in an HTML. I have a number given in a URL and basis on that I need to make a grid of size n and then render it in HTML.

As an example, let's say my URL is like this http://localhost/x/3, then I need to make a grid of 3x3. URL can be in any format, there is no restriction on that. I don't need to use any third party libraries at all for this.

I am able to make a grid as shown in this jsfiddle but everything is manual as of now.

Below is my HTML:


Below is my CSS:

div {
    width: 300px;
    height: 600px;

div div {
    width: 100px;
    height: 100px;
    outline: 1px solid;
    float: left;

What I need to do is, given a number in url, I need to render the grid of the same size in an HTML.

  • How can I get a number from a url in javascript?
  • And then generate grid basis on that number by rendering it in HTML.

Any jsfiddle example will help me to understand better.

Solution :


<div id="container">
    <!-- cells will be added here -->

Cells will be assigned class="gridCell" when created.


#container {
    width: 300px;
    height: 300px;
#container > .gridCell {
    float: left;
    padding: 0;
    margin: 0;
    border: 0;
    outline: 1px solid;

To read the number from url based on the base_url/x/num format we can use something like url.split("x/")[1]. To make sure it doesn't go wrong we can have a default number just in case.

Then we'll need a function called createGrid(n) which takes a number and creates cells with width and height equal to width of container/n and append them to the container.


var defaultNum = 6;
var url = window.location.href;
var num = parseInt(url.split("x/")[1]) || defaultNum;
var container = $('#container');
var width = container.outerWidth();

function createGrid(n) {
    if(!$.isNumeric(n) || n <= 0)
    for(var i = 0; i < n*n; i++) {
        var dimension = width/n;
        var cell = $('<div/>').addClass('gridCell').css({
            'width': dimension + 'px',
            'height': dimension + 'px'

jsfiddle DEMO

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