js $('button').on('click', function () { alert('you clicked the button!'); }); $('button').click(function () { alert('you clicked the button!'); });1.
Only the second one will work; jQuery does not have a function called `.on`.
2.
The second snippet will not function.
3.
Nothing `.click(function)` is shorter way to write `.on('click', function)`.
4.
The first snippet will execute for every button on the page, the second will only apply to the first button.
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