JQuery Study Notes Selector Four_jquery

复制代码 代码如下:

    

hello word!

    hello

设置内容包含“hello”的节点红色背景颜色
设置无内容的DIV内容设为EmptyDIV
设置包含 p 节点的 div 节点红色背景颜色
设置包含子节点的 div 节点红色背景颜色

First of all, let’s explain the extracurricular knowledge points in this chapter
1.element.css("attributeName","value")
Description: used to set the style of element, in the example $(this) .css("background","red"); is to set the background of the node to red.
Now let’s get to the topic
1.$("TagName:contains('keyword')")
Description: Used to obtain the node collection containing keyword content in all TagName nodes
Return value: Array (Element);
2.$("TagName:Empty")
Description: Used to obtain the node collection with empty content in all TagName nodes
Return value: Array(Element);
3.$("TagName1:has(TagName2))
Description: Used to obtain the node set containing TagName2 child nodes among all TagName1 nodes
Return value: Array(Element);
4.$( "TagName:parent")
Description: Used to obtain the node set including child nodes in all TagName nodes
Return value: Array(Element);