SubmitEvent.submitter

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句法
范例
规范
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只读 submitter property found on the SubmitEvent interface specifies the submit button or other element that was invoked to cause the form to be submitted.

句法

let submitter = submitEvent.submitter;

值

An element, indicating the element that sent the submit event to the form. While this is often an <input> element whose type 或 <button> whose type is submit , it could be some other element which has initiated a submission process.

If the submission was not triggered by a button of some kind, the value of submitter is null .

范例

In this example, a shopping cart may have an assortment of different submit buttons depending on factors such as the user's settings, the shop's settings, and any minimum or maximum shopping card totals established by the payment processors. Each of the submit elements' id is used to identify which payment processor the button corresponds to.

let form = document.querySelector("form");
form.addEventListener("submit", (event) => {
  let submitter = event.submitter;
  let handler = submitter.id;
  if (handler) {
    processOrder(form, handler);
  } else {
    showAlertMessage("An unknown or unaccepted payment type was selected. Please try again.", "OK");
  }
});

The handler ID is obtained by using the submit event's submitter property to get the submit button, from which we then get the ID. With that in hand, we can call a processOrder() function to handle the order, passing along the form and the handler ID.

规范

规范	状态	注释
HTML 实时标准 The definition of 'SubmitEvent.submitter' in that specification.	实时标准

浏览器兼容性

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
`submitter`	Chrome 81	Edge ?	Firefox 75	IE No	Opera ?	Safari ?	WebView Android 81	Chrome Android 81	Firefox Android ?	Opera Android ?	Safari iOS ?	Samsung Internet Android No

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元数据

最后修改： May 22, 2020

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浏览器兼容性

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