HTMLInputElement: validity ใใญใใใฃ
Baseline
Widely available
This feature is well established and works across many devices and browser versions. Itโs been available across browsers since โจ2015ๅนด7ๆโฉ.
validity ใฏ HTMLInputElement ใคใณใฟใผใใงใคในใฎ่ชญใฟๅใๅฐ็จใใญใใใฃใงใใใฎ่ฆ็ด ใฎๆๅน็ถๆ
ใ่กจใ ValidityState ใชใใธใงใฏใใ่ฟใใพใใ
ๅค
ValidityState ใชใใธใงใฏใใงใใ
ไพ
ๆฌกใฎไพใงใฏใ้ธๆ่ฆ็ด ใฎๅฆฅๅฝๆง็ถๆ ใๅๅพใใๅฆฅๅฝใงใชใๅ ดๅใฏๅฆ็ใใพใใ
js
const input = document.getElementById("myInput");
const validityState = input.validity;
if (!validityState.valid) {
// ใใใใใฎๅฆฅๅฝๆง็ถๆ
ใๆคๆป
}
ไปๆงๆธ
| Specification |
|---|
| HTML # the-constraint-validation-api:dom-cva-validity |
ใใฉใฆใถใผใฎไบๆๆง
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