The indexOf() returns the index of the first occurrence of a substring in a string, or -1 if the string does not contain the substring. · The indexOf() is case- ... ... <看更多>

Javascript strings are immutable, they cannot be modified "in place" so you cannot modify a single character. in fact every occurence of the same string is ONE ... ... <看更多>

JavaScript 中使用substr、substring、indexOf、lastIndexOf 等擷取字串方式。 substr. substr ( start , length ) 表示從start 位置開始，擷取length ... ... <看更多>

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