Document write() Method

最新推荐文章于 2025-08-21 23:22:44 发布

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最新推荐文章于 2025-08-21 23:22:44 发布

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分类专栏： JavaScript 文章标签： output stream javascript each html

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本文介绍了JavaScript中document.write()方法的使用方式，包括语法、参数说明及浏览器支持情况，并通过实例对比了write()与writeln()的区别。

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Definition and Usage

The write() method writes HTML expressions or JavaScript code to a document.

Syntax

document.write(exp1,exp2,exp3,...)

Parameter	Description
exp1,exp2,exp3,...	Optional. What to write to the output stream. Multiple arguments can be listed and they will be appended to the document in order of occurrence

Browser Support

The write() method is supported in all major browsers.

Examples

Example 1

Write some text to the output stream:

<html>
<body>

<script type="text/javascript">
document.write("Hello World!");
</script>

</body>
</html>

Try it yourself »

Example 2

Write some formatted text to the output stream:

<html>
<body>

<script type="text/javascript">
document.write("<h1>Hello World!</h1><p>Have a nice day!</p>");
</script>

</body>
</html>

Try it yourself »

Example 3

Difference between write() and writeln():

<html>
<body>

<p>Note that write() does NOT add a new line after each statement:</p>

<pre>
<script type="text/javascript">
document.write("Hello World!");
document.write("Have a nice day!");
</script>
</pre>


<p>Note that writeln() add a new line after each statement:</p>

<pre>
<script type="text/javascript">
document.writeln("Hello World!");
document.writeln("Have a nice day!");
</script>
</pre>

</body>
</html>