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Detailed explanation of user-select attribute

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藏色散人Original
2021-03-01 12:01:3313511browse

The user-select attribute is a new function in the CSS3 specification. It is used to set or retrieve whether the user is allowed to select text. The usage syntax is "user-select:none |text| all | element", and its default The value is text and applies to all elements except the replaced element.

Detailed explanation of user-select attribute

The operating environment of this article: Windows 7 system, CSS3 version, Dell G3 computer.

user-select, sets or retrieves whether the user is allowed to select text

user-select syntax:

user-select:none |text| all | element

Default value : text

Applies to: all elements except replacement elements

Inheritance: None

Animation: No

Computed value: Specified value

Value:

none: The text cannot be selected

text: The text can be selected

all: When all content is treated as one Can be selected as a whole. If you double-click or contextually click on a child element, the selected part will be the highest ancestor element tracing back from that child element.

element: Text can be selected, but the selection range is constrained by the element boundary

Description:

Set or retrieve whether the user is allowed to select text.

IE6-9 does not support this attribute, but supports using the label attribute onselectstart="return false;" to achieve the effect of user-select:none; Safari and Chrome also support this label attribute;

Until Opera12.5 this attribute is still not supported, but like IE6-9, it also supports using the private label attribute unselectable="on" to achieve the effect of user-select:none; the other value of unselectable is off ;

Except for Chrome and Safari, in other browsers, if the text is set to -ms-user-select:none;, the user will not be able to start selecting text in the text block. However, if the user starts selecting text in another area of ​​the page, the user can still continue to select the area text by setting the text to -ms-user-select:none;;

The corresponding script attribute is userSelect.

【Recommended Learning: CSS Video Tutorial

Compatibility:

Light Green=Support

Red= Not supported

Pink= Partially supported

Detailed explanation of user-select attribute

Example

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
<style>
.test{
padding:10px;
-webkit-user-select:none;
-moz-user-select:none;
-o-user-select:none;
user-select:none;
background:#eee;}
</style>
</head>
<body>
<div onselectstart="return false;" unselectable="on">选择我试试,你会发现怎么也选择不到我,哈哈哈哈</div>
</body>
</html>

Rendering:

Detailed explanation of user-select attribute

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