How to achieve double-click the selected text background color custom effect, text custom

How to achieve double-click the selected text background color custom effect, text custom

How to achieve the custom Effect of double-click the selected text background color:
This topic describes how to customize the background color when double-clicking the text in a selected area.
The following is a brief introduction to the code example:

<! DOCTYPE html>  
The above Code meets our requirements. In fact, we use the: selection selector to set the selected text. Generally, we use the mouse to select the selected text. Of course, we can also double-click the selected text, the code is very simple. For details about: selection selector, refer to: Selection attribute usage in CSS3.
 
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