Document.write()

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句法
注意事项
规范
浏览器兼容性
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Document.write() 方法把文本字符串写入文档流，打开通过 document.open() .

注意 : Because


							document.write()

写入到文档 stream ，调用


							document.write()

在关闭 (加载) 文档时自动调用


							document.open()

, 将清零文档 .

句法

document.write(markup);

参数

markup

范例

<html>
<head>
  <title>Write example</title>
  <script>
    function newContent() {
      document.open();
      document.write("<h1>Out with the old, in with the new!</h1>");
      document.close();
    }
  </script>
</head>
<body onload="newContent();">
  <p>Some original document content.</p>
</body>
</html>

注意事项

The text you write is parsed into the document's structure model. In the example above, the h1 element becomes a node in the document.

Writing to a document that has already loaded without calling document.open() will automatically call document.open() . After writing, call document.close() to tell the browser to finish loading the page.

若 document.write() call is embedded within an inline HTML <script> tag, then it will not call document.open() 。例如：

<script>
  document.write("<h1>Main title</h1>")
</script>

注意 :


							document.write()

and


								document.writeln

do not work in XHTML documents (you'll get an "Operation is not supported" [


							NS_ERROR_DOM_NOT_SUPPORTED_ERR

] error in the error console). This happens when opening a local file with the .xhtml file extension or for any document served with an


							application/xhtml+xml

MIME 类型 . More information is available in the W3C XHTML FAQ . 注意 : Using


							document.write()

in deferred or asynchronous scripts will be ignored and you'll get a message like "A call to


							document.write()

from an asynchronously-loaded external script was ignored" in the error console. 注意 : In Edge only, calling


							document.write()

more than once in an


								<iframe>

causes the error "SCRIPT70: Permission denied". 注意 : Starting with version 55, Chrome will not execute


							<script>

elements injected via


							document.write()

when specific conditions are met. For more information, refer to Intervening against document.write() .

规范

规范	状态	注释
HTML 实时标准 The definition of 'document.write(...)' in that specification.	实时标准
DOM (文档对象模型) 2 级 HTML 规范 The definition of 'document.write(...)' in that specification.	过时

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
`write`	Chrome 1	Edge 12	Firefox 1	IE 4	Opera 3	Safari 1	WebView Android 1	Chrome Android 18	Firefox Android 4	Opera Android 10.1	Safari iOS 1	Samsung Internet Android 1.0

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句法

参数

范例

注意事项

规范

浏览器兼容性

图例

另请参阅

元数据

相关话题