validityState.badInput

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只读 badInput property of a ValidityState object indicates if the user has provided input that the browser is unable to convert. For example, if you have a number input element whose content is a string. 注意： While this is unsupported in Internet Explorer, any non-numeric value will be dismissed from the field if it is a number input.

范例

<input type="number" id="age">

var input = document.getElementById("age");
if (input.validity.badInput) {
  console.log("Bad input detected…");
} else {
  console.log("Content of input ok.");
}

规范

规范	状态	注释
HTML 实时标准 The definition of 'ValidityState.badInput' in that specification.	实时标准	Live Standard
HTML 5.1 The definition of 'ValidityState.badInput' in that specification.	推荐	No change from the previous snapshot HTML5 .
HTML5 The definition of 'ValidityState.badInput' in that specification.	推荐	First snapshot of HTML 实时标准 containing this interface.

浏览器兼容性

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`badInput`	Chrome 25	Edge 14	Firefox 29	IE No	Opera 15	Safari 11	WebView Android 4.4	Chrome Android Yes	Firefox Android 64	Opera Android 14	Safari iOS 7	Samsung Internet Android Yes

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规范

浏览器兼容性

图例

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元数据

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