HTML DOM Document execCommand()

Make the selected text bold:

document.execCommand("bold");

Description

The execCommand() method is deprecated. Do NOT use it.

The applets property returns an empty HTMLCollection in all new browsers.

The <applet> element is not supported in HTML5.

document.execCommand( command, showUI, value)

Parameter	Description
command	The name of the command to execute: "backColor" "bold" "createLink" "copy" "cut" "defaultParagraphSeparator" "delete" "fontName" "fontSize" "foreColor" "formatBlock" "forwardDelete" "insertHorizontalRule" "insertHTML" "insertImage" "insertLineBreak" "insertOrderedList" "insertParagraph" "insertText" "insertUnorderedList" "justifyCenter" "justifyFull" "justifyLeft" "justifyRight" "outdent" "paste" "redo" "selectAll" "strikethrough" "styleWithCss" "subscript" "superscript" "undo" "unlink" "useCSS"
showUI	A Boolean. Specifies if the UI should be shown or not.
value	Some commands need a value to be completed.

Type	Description
Boolean	`true` if the command is supported, otherwise `false`.