I feel like these quotation marks are useless. I removed the quotation marks and it still works. Is there any other place where these quotation marks must be used in the future?
ringa_lee2017-08-15 11:30:57
It is best to add quotation marks. Without quotation marks, it will be more difficult for the browser to identify the attributes of the element, which will cause parsing to slow down. Once an attribute is not separated by spaces, it will directly cause the attribute to not be parsed.
