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Ruby: inject
I love inject. To be more specific, I love Enumerable#inject. I find it easy to read and easy to use. It's powerful and it lets me be more concise. Enumerable#inject is a good thing.Of course, I didn't always love it. When I was new to Ruby I didn't understand what it was, so I fou ...
一直都知道jQuery 1.7开始就提示live方法将移除，并且可以使用on方法进行替代，动手做了，才发现，怎么着好像不行？！！最后才发现，原来，没用对语法！
jQuery.on() 绑定点击事件可以用两种方式使用：
$(document).on('click', ...