Document.createProcessingInstruction()

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createProcessingInstruction() generates a new processing instruction node and returns it.

The new node usually will be inserted into an XML document in order to accomplish anything with it, such as with node.insertBefore .

句法

piNode = document.createProcessingInstruction(target, data)

参数

piNode is the resulting ProcessingInstruction 节点。
target is a string containing the first part of the processing instruction (i.e., <? target … ?> )
data is a string containing any information the processing instruction should carry, after the target. The data is up to you, but it can't contain ?> , since that closes the processing instruction.

异常

DOM_INVALID_CHARACTER

Throws if either of the following are true:

The processing instruction target is invalid — it should be a valid XML name that doesn't contain "xml", "XML", or any case combination of the two, other than standardized ones such as <?xml-stylesheet ?> .
closing processing instruction sequence ( ?> ) is part of the data .

范例

var doc = new DOMParser().parseFromString('<foo />', 'application/xml');
var pi = doc.createProcessingInstruction('xml-stylesheet', 'href="mycss.css" type="text/css"');
doc.insertBefore(pi, doc.firstChild);
console.log(new XMLSerializer().serializeToString(doc));
// Displays: <?xml-stylesheet href="mycss.css" type="text/css"?><foo/>

规范

规范	状态	注释
DOM The definition of 'createProcessingInstruction()' in that specification.	实时标准	无变化
DOM4 The definition of 'createProcessingInstruction()' in that specification.	过时	Added more explicit definition of how the `data` parameter is validated.
DOM (文档对象模型) 3 级核心规范 The definition of 'createProcessingInstruction()' in that specification.	过时	Added note that the namespace of the target name is not checked whether it is well-formed, defined what is considered an illegal character for the target name and specified the returned `ProcessingInstruction` object more precisely.
DOM (文档对象模型) 级别 2 核心规范 The definition of 'createProcessingInstruction()' in that specification.	过时	无变化
DOM (文档对象模型) 1 级规范 The definition of 'createProcessingInstruction()' in that specification.	过时	初始定义

浏览器兼容性

The compatibility table on 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
`createProcessingInstruction`	Chrome 1	Edge 12	Firefox Yes	IE ?	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes

图例

完整支持
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元数据

最后修改： Mar 22, 2019

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