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$("#div")这是一个对象,是一个类数组,为什么用的时候就直接用了,而不是$("#div")[0]?
JQuery id selector problem? -PHP Chinese website Q&A-Problems with jQuery's id selector? -PHP Chinese website Q&A
Let’s take a look and learn.
如果多个元素分配了相同的id,将只匹配该id选择集合的第一个DOM元素。所以$("#div")也是选中第一个。$("#div")[0]这种用法是针对数组标签的,而不是id
JQuery id selector problem? -PHP Chinese website Q&A-Problems with jQuery's id selector? -PHP Chinese website Q&A
Let’s take a look and learn.
如果多个元素分配了相同的id,将只匹配该id选择集合的第一个DOM元素
。所以$("#div")也是选中第一个。$("#div")[0]这种用法是针对数组标签的,而不是id