$('.close-button').on('click', function(){ $('.element').removeClass('grown'); $('.element').addClass('spot'); }); $('.element').on('click', ... ... <看更多>

It will allow to pass unprocessed class arrays to jQuery from other libraries/frameworks that use the array syntax. (This one is a bit of a ... ... <看更多>

Mutating built-in prototypes is not a good idea. It's not only inelegant, it can also lead to conflicts when other scripts on the page ... ... <看更多>