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HTML | DOM Textarea cols Property
  • Last Updated : 15 Apr, 2019
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The DOM Textarea cols Property is used to set or return the value of the cols attribute of a textarea field. The cols attribute how many average-width characters should fit on a single line.

Syntax:

  • It is used to return the cols property.
    textareaObject.cols
  • It is used to Set the cols property:
    textareaObject.cols = number

Property Values:

  • number: It specifies the width of the textarea fields. It has a Default value i.e 20.

Return Value: It returns a numeric value which represent the width of a textarea in characters.

Example-1: HTML program to illustrate set the DOM Textarea cols Property.






<!DOCTYPE html>
<html>
  
<head>
    <title>DOM Textarea cols Property</title>
    <style>
        h1,
        h2 {
            text-align: center;
        }
    </style>
</head>
  
<body>
    <h1 style="color: green;"
            GeeksforGeeks 
        </h1>
  
    <h2
            DOM Textarea cols Property 
        </h2>
  
    <!-- Below textarea is assigned a cols value 25 
            That is, 25 characters will fit in a line -->
    <textarea id="GFG" rows="4" cols="25">
        A computer science portal for geeks.
    </textarea>
    <button type="button" onclick="myGeeks()">Submit</button>
  
    <script>
        function myGeeks() {
            document.getElementById("GFG").cols = "100";
        }
    </script>
</body>
  
</html>

Output :

Before Clicking On Button:

After Clicking On Button :

Example-2: HTML program to illustrate return the DOM Textarea cols Property.




<!DOCTYPE html>
<html>
  
<head>
    <title>DOM Textarea cols Property</title>
    <style>
        h1,
        h2 {
            text-align: center;
        }
    </style>
</head>
  
<body>
    <h1 style="color: green;"
            GeeksforGeeks 
        </h1>
  
    <h2
            DOM Textarea cols Property 
        </h2>
  
    <!-- Below textarea is assigned a cols value 25 
            That is, 25 characters will fit in a line -->
    <textarea id="GFG" rows="4" cols="25">
        A computer science portal for geeks.
    </textarea>
    
    <button type="button" onclick="myGeeks()">Submit</button>
    <p id="sudo"></p>
    
    <script>
        function myGeeks() {
            var g = document.getElementById("GFG").cols;
            document.getElementById(
              "sudo").innerHTML = 
              "There are " + g +
              " columns in a textarea width.";
        }
    </script>
</body>
  
</html>

Output

Before Clicking On Button:

After Clicking On Button:

Note: Both “textareaObject.cols” and “style.width” work as same.

Supported Browsers: The browser supported by Textarea cols Property are listed below:

  • Google Chrome
  • Internet Explorer
  • Firefox
  • Opera
  • Safari

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