HTML | DOM execCommand() Method

The DOM execCommand() method in HTML DOM is used to execute a command specified by the user on the editable selected section.

Syntax:

document.execCommand( command, showUI, value )

Parameters: This method accepts three parameters which are listed below:



  • command: This parameter hold the name of command which is execute on the selected section. There are many commands in HTML some of them are: backcolor, bold, copy, cut, delete etc.
  • showUI: It holds the Boolean value which indicating whether the UI shown or not.
  • value: This parameter holds the value of commands.

Return Value: It returns a Boolean value. If the command is supported then it returns True otherwise returns False.

Example:

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<!DOCTYPE html>
<html>
    <head>
        <title>
            HTML DOM execCommand() Method
        </title>
          
        <!--script to make text bold-->
        <script>
            document.designMode = "on";
              
            function execfunction(event) {
                document.execCommand("bold");
            }
        </script>
    </head>
      
    <!--onmouseout event when the user moves the mouse 
    pointer after selecting, this execfunction()
    will execute.-->
    <body onmouseout = "execfunction(event)">
      
        <h1>
            Welcome to GeekforGeeks
        </h1>
          
        <h3>
            Document execCommand() Method
        </h3>
          
        <p>
            The execCommand() method executes a specified 
            command on selected text or section.
        </p>
          
        <p>
            Select some text in this page, and move the mouse
            pointer away from it. It will make the text bold.
        </p>
    </body>
</html>                    

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Output:
Before Select the content:

After Select the content:

After Moving Mouse pointer:

Supported Browsers: The browser supported by DOM execCommand() Method are listed below:

  • Chrome
  • Internet Explorer 9.0
  • Opera 29.0
  • Firefox 41.0
  • Apple Safari 20.0


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