The difference between jQuery's attr() and prop()

jQuery's attr() and prop() are both used to get and set properties, but they are different. If you are interested in jQuery, you can take a look and learn jQuery~

##attr( ) is generally used to set default values, prop() is generally used to set attribute values, that is, for attributes like "diabled", "checked", "selected", attr() only stores their initial values. And prop() stores the value of their real-time state.

When processing the attributes that the HTML element itself has, prop() is generally used

When processing our custom attributes of the HTML element, attr is generally used ()

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