How to change the Content of a <textarea> using JavaScript ?

Given an HTML document containing a <textarea> element and the task is to change the content of a <textarea> element with the help of JavaScript.

Method 1: This method uses id attribute of textarea with value property to change the content of <textarea> element. JavaScript code is written within the <script> tag.

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<!DOCTYPE html>
<html>
  
<head>
    <title>
        How to change the Content of
        a textarea using JavaScript?
    </title>
</head>
  
<body style="text-align:center;">
      
    <h1 style="color:green;">
        GeeksforGeeks
    </h1>
      
    <h3>
        How to change the Content of a
        <textarea> with JavaScript?
    </h3>
  
    <textarea id="textArea">
        A Computer Science Portal
    </textarea>
      
    <br><br>
  
    <button onclick="changeContent()">
        Click to change
    </button>
  
    <script>
      
        // JavaScript code to change
        // the content of <textarea>
        function changeContent() {
            var x = document.getElementById('textArea');
            x.value = "GeeksforGeeks";
        }
    </script>
</body>
  
</html>                             

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Output:


        
          
          
          
        

            

    

  • Before clicking the button:
    

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  • After clicking the button:
    

    • 



Method 2: This method uses the id attribute of the textarea with innerHTML property to change the content of <textarea> element. JavaScript code is written within the <script> tag.











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<!DOCTYPE html> 


<html> 


  


<head> 


    <title> 


        How to change the Content of 


        a textarea using JavaScript? 


    </title> 


</head> 


  


<body style="text-align:center;"> 


      


    <h1 style="color:green;"> 


        GeeksforGeeks 


    </h1> 


      


    <h3> 


        How to change the Content of a 


        <textarea> with JavaScript? 


    </h3> 


  


    <textarea id="textArea"> 


        A Computer Science Portal 


    </textarea> 


      


    <br><br> 


  


    <button onclick="changeContent()"> 


        Click to change 


    </button> 


  


    <script> 


      


        // JavaScript code to change 


        // the content of <textarea> 


        function changeContent() { 


            document.getElementById('textArea').innerHTML 


                    = "GeeksforGeeks"; 


        } 


    </script> 


</body> 


  


</html>                            



















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Output:


    

  • Before clicking the button:
    

    • 

  • After clicking the button:
    

    • 



Method 3: This methd uses id attribute of the textarea with innerText property to change the content of <textarea> element. JavaScript code is between the <script> tag.











                                    filter_none




                                    edit

                                    close




                                    play_arrow




                                    link

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                                    code
                                




















<!DOCTYPE html> 


<html> 


  


<head> 


    <title> 


        How to change the Content of 


        a textarea using JavaScript? 


    </title> 


</head> 


  


<body style="text-align:center;"> 


      


    <h1 style="color:green;"> 


        GeeksforGeeks 


    </h1> 


      


    <h3> 


        How to change the Content of a 


        <textarea> with JavaScript? 


    </h3> 


  


    <textarea id="textArea"> 


        A Computer Science Portal 


    </textarea> 


      


    <br><br> 


  


    <button onclick="changeContent()"> 


        Click to change 


    </button> 


  


    <script> 


      


        // JavaScript code to change 


        // the content of <textarea> 


        function changeContent() { 


            document.getElementById('textArea').innerText 


                    = "GeeksforGeeks"; 


        } 


    </script> 


</body> 


  


</html>                              



















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Output:


    

  • Before clicking the button:
    

    • 

  • After clicking the button:
    

    • 




          
          
          

          

    

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