Javascript RegExp教程

JavaScript RegExp global

说明

global 是 RegExp 对象的只读布尔属性。它指定特定的正则表达式是否执行全局匹配,即它是否是使用"g"属性创建的。

语法

其语法如下-
RegExpObject.global

返回值

如果设置了"g"修饰符,则返回"TRUE",否则返回"FALSE"。

示例

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

输出

Test1-Global property is not set
Test2-Global property is set
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