JAVAScriptdocument. selection. createRange method

The document. selection. createRange () method returns a TextRange object based on the selected text or a ControlRange object based on the selected control. With execCommand, you can do a lot of things in the HTML editor, such as bold text, italic, copying... SyntaxHighlig

The document. selection. createRange () method returns a TextRange object based on the selected text or a ControlRange object based on the selected control.
With execCommand, you can perform many tasks in the HTML editor, such as bold text, italic text, copying, pasting, and hyperlink creation.
 
Instance 1:
<Br/> test content!

 
Example 2:

There is a piece of text in the text field. When you select a few words and click a button or link, a dialog box will pop up, the information in the dialog box is the selected text. <br/> which of the following statements can solve the problem? Please help me more !!! Thank you <br/>



There is a piece of text in the text field. When you select a few words and click a button or link, a dialog box will pop up, the information in the dialog box is the selected text. <br/> which of the following statements can solve the problem? Please help me more !!! Thank you <br/>

 
Example 3: select text in Input