if ([obj[@"name"] rangeOfString:textField.text].location != NSNotFound) {
// [obj[@"name"] 包含 textField.text
}
//截取字符串某个字符后面的字符串
NSRange range = [message rangeOfString:@"code="]; //现获取要截取的字符串位置
NSString * code = [message substringFromIndex:range.location + range.length]; //截取字符串
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