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JavaScript: Create a function to update the content of a specific cell of a table

JavaScript DOM: Exercise-6 with Solution

Write a JavaScript function that accept row, column, (to identify a particular cell) and a string to update the content of that cell.

Sample HTML file: 


<!DOCTYPE html>
<html><head>
<meta charset=utf-8 />
<title>Change the content of a cell</title>
</head><body>
<table id="myTable" border="1">
<tr><td>Row1 cell1</td>
<td>Row1 cell2</td></tr>
<tr><td>Row2 cell1</td>
<td>Row2 cell2</td></tr>
<tr><td>Row3 cell1</td>
<td>Row3 cell2</td></tr>
</table><form>
<input type="button" onclick="changeContent()" value="Change content">
</form></body></html>

Sample Solution: -

HTML Code:

<!DOCTYPE html> 
<html> 
<head> 
<meta charset=utf-8 /> 
<title>Change the content of a cell</title> 
<style type="text/css"> 
body {margin: 30px;} 
</style>  
</head><body> 
<table id="myTable" border="1"> 
<tr><td>Row1 cell1</td> 
<td>Row1 cell2</td></tr> 
<tr><td>Row2 cell1</td> 
<td>Row2 cell2</td></tr> 
<tr><td>Row3 cell1</td> 
<td>Row3 cell2</td></tr> 
</table><form> 
<input type="button" onclick="changeContent()" value="Change content"> 
</form></body></html>

JavaScript Code:

function changeContent()
{
rn = window.prompt("Input the Row number(0,1,2)", "0");
cn = window.prompt("Input the Column number(0,1)","0");
content = window.prompt("Input the Cell content");  
var x=document.getElementById('myTable').rows[parseInt(rn,10)].cells;
x[parseInt(cn,10)].innerHTML=content;
}

Sample Output:

javascript-dom-exercise-6

Flowchart:

Flowchart: JavaScript - Create a function to update the content of a specific cell of a table.

Live Demo:

See the Pen javascript-dom-exercise-6 by w3resource (@w3resource) on CodePen.


Improve this sample solution and post your code through Disqus

Previous: Write a JavaScript function to add rows to a table.
Next: Write a JavaScript function that creates a table, accept row, column numbers from the user, and input row-column number as content (e.g. Row-0 Column-0) of a cell.

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JavaScript: Tips of the Day

How to insert an item into an array at a specific index (JavaScript)?

What you want is the splice function on the native array object.

arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert). In this example we will create an array and add an element to it into index 2:

var arr = [];
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
arr[3] = "Kai Jim";
arr[4] = "Borge";

console.log(arr.join());
arr.splice(2, 0, "Lene");
console.log(arr.join());

Ref: https://bit.ly/2BXbp04