HTMLSelectElement.checkValidity() - Web API 接口参考 编辑

HTMLSelectElement.checkValidity() 会检查元素是否有任何输入约束条件，并且检查值是否符合约束条件. 如果值是不符合约束条件的, 浏览器就会在该元素上触发一个可以撤销的 invalid 事件,  然后返回 false.

Syntax

var result = selectElt.checkValidity();

Specifications

Specification	Status	Comment
HTML Living Standard HTMLSelectElement.checkValidity()	Living Standard	No change since the latest snapshot, HTML5.
HTML5 HTMLSelectElement.checkValidity()	Recommendation	Initial definition, snapshot of HTML Living Standard

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

• Desktop
• Mobile

Feature	Chrome	Edge	Firefox (Gecko)	Internet Explorer	Opera	Safari (WebKit)
Basic support	(Yes)	(Yes)	4.0 (2.0)	10	(Yes)	(Yes)

Feature	Android	Chrome	Edge	Firefox Mobile (Gecko)	Firefox OS	IE Phone	Opera Mobile	Safari Mobile
Basic support	?	(Yes)	(Yes)	4.0 (2.0)	1.0	?	?	(Yes)

See also

• Form validation.