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HTMLSelectElement.checkValidity() 方法會檢查元素是否有任何的檢核、驗證條件,並且檢查是否滿足這些條件。如果元素沒有通過這些檢核,瀏覽器會於該元素上觸發一個可取消的 invalid 事件,並回傳 false


var result = selectElt.checkValidity();


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


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!

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)



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