JavaScript RegExp – (foo|bar|baz) 描述 (foo|bar|baz) 匹配其中任何一种可能的选择。 例子 下面是 RegExp 表达式的使用示例。 <html> <head> <title>JavaScript RegExp</title> </head> <body> <script type = "text/javascript"> var str = "foo abc"; var pattern = /(foo|bar|baz)/g; var result = str.match(pattern); document.write("Test 1 - returned value : " + result); str = "bar baz"; result = str.match(pattern); document.write("<br/>Test 2 - returned value : " + result); </script> </body> </html> HTMLCopy 输出结果 Test 1 - returned value : foo Test 2 - returned value : bar,bazHTMLCopy