How to design a ChessBoard using CSS flex box and Javascript
Tags: javascript, webdev, css, programming
Published: 2022-05-02 11:43:32

In this article i am going to show how to design chessboard using css and little bit of javascript.
For this you need to have basic idea of CSS Flex-box and nth-child() property.

So let's get started...
We will add containerEven class as parent container for every even row and  containerOdd for every odd row,

Below shows the CSS for the same
``` css
    .containerEven>div:nth-child(odd) {
        background-color: white;
    }

    .containerEven>div:nth-child(even) {
        background-color: black;
    }

    .containerOdd>div:nth-child(odd) {
        background-color: black;
    }

    .containerOdd>div:nth-child(even) {
        background-color: white;
    }
```

Here is the html part

```html
<div class="parent-class">
    <section class="containerEven" id='container1'></section>
    <section class="containerOdd" id='container2'></section>
    <section class="containerEven" id='container3'></section>
    <section class="containerOdd" id='container4'></section>
    <section class="containerEven" id='container5'></section>
    <section class="containerOdd" id='container6'></section>
    <section class="containerEven" id='container7'></section>
    <section class="containerOdd" id='container8'></section>
</div>
```

Now what's left is using javascript to dynamically append element inside these section tags with the help of corresponding id.

```javascript
  var res1 = [], res2 = [], res3 = [], res4 = [], res5 = [], res6 = [], res7 = [], res8 = [];
    for (i = 1; i <= 8; i++) {
        res1 += `<div class="item"></div>`
        res2 += `<div class="item"></div>`
        res3 += `<div class="item"></div>`
        res4 += `<div class="item"></div>`
        res5 += `<div class="item"></div>`
        res6 += `<div class="item"></div>`
        res7 += `<div class="item"></div>`
        res8 += `<div class="item"></div>`
    }
    document.getElementById(`container1`).innerHTML = res1;
    document.getElementById(`container2`).innerHTML = res2;
    document.getElementById(`container3`).innerHTML = res3;
    document.getElementById(`container4`).innerHTML = res4;
    document.getElementById(`container5`).innerHTML = res5;
    document.getElementById(`container6`).innerHTML = res6;
    document.getElementById(`container7`).innerHTML = res7;
    document.getElementById(`container8`).innerHTML = res8;
```


So here, what we are doing is we have taken 8 arrays to store each row data.Once we get the data we append it to corresponding container id, 

Here is the complete code with output

```html
<style>
    .parent-class {
        border: 5px chocolate groove;
    }

    .containerEven,
    .containerOdd {
        display: flex;
        background-color: dodgerblue;
    }

    .item {
        background-color: #f1f1f1;
        padding: 20px;
        font-size: 30px;
        flex: 1;
        height: 50px;
        text-align: center;
    }

    .containerEven>div:nth-child(odd) {
        background-color: white;
    }

    .containerEven>div:nth-child(even) {
        background-color: black;
    }

    .containerOdd>div:nth-child(odd) {
        background-color: black;
    }

    .containerOdd>div:nth-child(even) {
        background-color: white;
    }
</style>

<div class="parent-class">
    <section class="containerEven" id='container1'></section>
    <section class="containerOdd" id='container2'></section>
    <section class="containerEven" id='container3'></section>
    <section class="containerOdd" id='container4'></section>
    <section class="containerEven" id='container5'></section>
    <section class="containerOdd" id='container6'></section>
    <section class="containerEven" id='container7'></section>
    <section class="containerOdd" id='container8'></section>
</div>

<script>
    var res1 = [], res2 = [], res3 = [], res4 = [], res5 = [], res6 = [], res7 = [], res8 = [];
    for (i = 1; i <= 8; i++) {
        res1 += `<div class="item"></div>`
        res2 += `<div class="item"></div>`
        res3 += `<div class="item"></div>`
        res4 += `<div class="item"></div>`
        res5 += `<div class="item"></div>`
        res6 += `<div class="item"></div>`
        res7 += `<div class="item"></div>`
        res8 += `<div class="item"></div>`
    }
    document.getElementById(`container1`).innerHTML = res1;
    document.getElementById(`container2`).innerHTML = res2;
    document.getElementById(`container3`).innerHTML = res3;
    document.getElementById(`container4`).innerHTML = res4;
    document.getElementById(`container5`).innerHTML = res5;
    document.getElementById(`container6`).innerHTML = res6;
    document.getElementById(`container7`).innerHTML = res7;
    document.getElementById(`container8`).innerHTML = res8;
</script>
```

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/n0v0dri8kkm1pi6virw7.png)
 

Hope this helps you ..