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                [TOC] # 1.match 查找 ## 將所有匹配的字符(內容)提取出來,返回數組 * g:全局搜索(區分大小寫),ig:忽略大小寫 > //語法 stringObject.match(searchvalue) stringObject.match(regexp) 例子: ``` var reg = /l/ig; var str = "hellLo"; console.log(str.match(reg)); ``` # 2.search 查找到的個數量 ## search() 方法用于檢索字符串中指定的子字符串的位置 > //語法 stringObject.search(regexp)/ //注釋:如果沒有找到任何匹配的子串,則返回 -1。 ``` var reg = /l/ig; var str = "hellLo"; console.log(str.search(reg)); ``` # 3.replace 替換 ## replace() 替換匹配的對象 > //語法 stringObject.replace(regexp/substr,replacement) ``` var reg = /l/ig; var str = "hellLo"; console.log(str.replace(reg,"**")) ``` # 4.split(reg) 將字符串分割成數組 ``` var a = "helo"; var reg = /l/; console.log(a.split(reg)); //["he", "o"] ```
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