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這篇文章主要介紹了簡介JavaScript中search()方法的使用,是JS入門學習中的基礎知識,需要的朋友可以參考下
此方法執行搜尋Regex，String對象之間的匹配。
文法
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| 1 | string.search(regexp); |
下面是參數的詳細資料：
regexp : Regex對象。如果非RegExp對象obj傳遞，它是隱式通過使用new RegExp(obj) 轉換為RegExp
傳回值:
如果成功的話，搜尋將返回字串內的Regex的索引。否則，它返回 -1.
例子：
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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | <html> <head> <title>JavaScript String search() Method</title> </head> <body> <script type="text/javascript"> var re = /apples/gi; var str = "Apples are round, and apples are juicy."; if ( str.search(re) == -1 ){ document.write("Does not contain Apples" ); }else{ document.write("Contains Apples" ); } </script> </body> </html> |
這將產生以下結果：
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| 1 | Contains Apples |
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