运算符“==”无法应用于“char”和“string”类型的操作数
if(97<=this.userId[i]&&this.userId[i]<=122||65<=this.userId[i]&&this.userId[i]<=90||t...
if (97 <= this.userId[i] && this.userId[i] <= 122 || 65 <= this.userId[i] && this.userId[i] <= 90 || this.userId[i] && this.userId[i] == "_")
this.userId[i] == "_"这句应该怎样改呢? 展开
this.userId[i] == "_"这句应该怎样改呢? 展开
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