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JavaScript正则表达式之multiline属性的应用_基础知识

WBOYOriginal: 2016-05-16 15:54:511532browse

多行正则表达式是对象的只读布尔属性。它指定是否一个特定的正则表达式进行多行匹配，即，不管是否使用“m”属性创建。
语法

RegExpObject.multiline

下面是参数的详细信息：

返回值:

如果“m”修改被设置返回“TRUE”，否则返回“FALSE”。

例子：

<html>
<head>
<title>JavaScript RegExp multiline Property</title>
</head>
<body>
<script type="text/javascript">
  var re = new RegExp( "string" );
  if ( re.multiline ){
   document.write("Test1-multiline property is set"); 
  }else{
   document.write("Test1-multiline property is not set"); 
  }
  re = new RegExp( "string", "m" );
  if ( re.multiline ){
   document.write("<br/>Test2-multiline property is set"); 
  }else{
   document.write("<br/>Test2-multiline property is not set"); 
  }
</script>
</body>
</html>

这将产生以下结果：

Test1 - multiline property is not set
Test2 - multiline property is set

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