此方法執行搜索正則表達式，String對象之間的匹配。
語法
string.search(regexp);
下面是參數的詳細信息：
返回值:
例子：
<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：
Contains Apples
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