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title
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Use Bracket Notation to Find the First Character in a String
使用括号表示法查找字符串中的第一个字符
使用括号表示法查找字符串中的第一个字符
请记住,字符串的第一个字符位于第零个位置。例如:
var str = "Hello"; var letter = str[0]; // This equals "H"