JQuery选择器 大于 空格 波浪线 加号的区别

元素遍历

符号	说明
空格	$(‘parent child’)表示获取parent下的所有的child节点（所有的子孙）。
大于号	$(‘parent > child’)表示获取parent下的所有叫child的儿子(第一代)。
加号	$(‘pre + nextbrother’)表示获得pre节点的下一个兄弟节点，相当于next()方法
波浪号	$(‘pre ~ brother’)表示获取pre节点的后面的所有兄弟节点，相当于nextAll()方法。

参见

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Child Selector (“parent > child”)

Selects all direct child elements specified by “child” of elements specified by “parent”.

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Descendant Selector (“ancestor descendant”)

Selects all elements that are descendants of a given ancestor.

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Next Adjacent Selector (“prev + next”)

Selects all next elements matching “next” that are immediately preceded by a sibling “prev”.

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Next Siblings Selector (“prev ~ siblings”)

Selects all sibling elements that follow after the “prev” element, have the same parent, and match the filtering “siblings” selector.

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Attribute Contains Prefix Selector [name|=”value”]

Selects elements that have the specified attribute with a value either equal to a given string or starting with that string followed by a hyphen (-).

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