JS代码格式化富文本

(NSMutableAttributedString *)fullHTMLStringExtendToMutableString:(NSString *)bodyString width:(float)textWidth font:(UIFont *)font textColor:(UIColor *)color{
NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithData:[bodyString dataUsingEncoding:NSUnicodeStringEncoding] options:@{ NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType,NSFontAttributeName : font } documentAttributes:nil error:nil];
[str enumerateAttribute:NSAttachmentAttributeName inRange:NSMakeRange(0, str.length) options:NSAttributedStringEnumerationLongestEffectiveRangeNotRequired usingBlock:^(id _Nullable value, NSRange range, BOOL * _Nonnull stop) {
if (value && [value isKindOfClass:[NSTextAttachment class]]) {
NSTextAttachment *textAttachment = value;
CGFloat width = CGRectGetWidth(textAttachment.bounds);
CGFloat height = CGRectGetHeight(textAttachment.bounds);
if (width > [UIScreen mainScreen].bounds.size.width) {// 大于屏幕宽度时，缩小bounds宽度，高度
height = textWidth / width * height;
width = textWidth;
textAttachment.bounds = CGRectMake(0, 0, width, height);
}

  }

}];
[str addAttribute:NSForegroundColorAttributeName value:color range:NSMakeRange(0, str.length)];
[str addAttribute:NSFontAttributeName value:font range:NSMakeRange(0, str.length)];

NSMutableParagraphStyle style = [[NSMutableParagraphStyle alloc] init];
// style.lineSpacing = 5MZ_RATE;
[str addAttribute:NSParagraphStyleAttributeName value:style range:NSMakeRange(0, str.length)];
return str;
}