多谢！
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c=String.fromCharCode(65)
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str.charCodeAt(x)，表示将字符串str中的第x个字符转变成ASCII值
求ASCII转字符：javascript用String.fromCharCode(x);vbscript用chr(x)或chrw(x)
求字符转ASCII：javascript用??;vbscript用asc('字符')