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jQuery filter selector usage analysis_jquery

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Release： 2016-05-16 16:14:49
Original
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The example in this article describes the usage of jQuery filter selector. Share it with everyone for your reference. The specific analysis is as follows:

In practice, a filter selector can be added to the basic selector to complete the query task. Depending on the specific situation, the index value, content, attributes, sub-element position, and form of the element can be used in the filter selector

Domain attributes and visibility as filter conditions

1. :first selector

Format:

Copy code The code is as follows:
$("selector: first")
is used Filter the current jQuery collection and select the first matching element

Example:

Copy code The code is as follows:
$("td:first").css("border ", "2px solid blue");

2. :last selector

Format:

Copy code The code is as follows:
$("selector: last")
is used Filter the current jQuery collection and select the last matching element
Example:
Copy code The code is as follows:
$("td:last").css("border", " 2px solid blue");

3. :odd selector

Format:

Copy code The code is as follows:
$("selector: odd")
is used Select all elements with odd index (counting from 0)

Example:

Copy code The code is as follows:
$("td:odd").css("background ", "red");

4. :even selector

Format:

Copy code The code is as follows:
$("selector: even")
is used Select all elements with even index (counting from 0)

Example:

Copy code The code is as follows:
$("td:even").css("background ", "red");

5. :eq selector

Format:

Copy code The code is as follows:
$("selector:eq(index)")
Used to select the element whose index is equal to the given value from the matching set

Example:

Copy code The code is as follows:
$("li:eq(1)").css ("color", "blue");

6. :gt selector

Format:

Copy code The code is as follows:
$("selector:gt(index)")
Used to select all elements from a matched set with index greater than a given value

Example:

Copy code The code is as follows:
$("li:gt(0)").css ("color", "green");

7. :lt selector

Format:

Copy code The code is as follows:
$("selector:lt(index)")
Used to select all elements from a matched set with index greater than a given value

Example:

Copy code The code is as follows:
$("li:lt(5)").css ("color", "green");

To find all elements with index greater than n1 and less than n2, you can use array selector,

Copy code The code is as follows:
$("selector:gt(n1), selector:lt(n2)") ;

8. :not selector

Format:

Copy code The code is as follows:
$("selector1:not(selector2)")
Used to remove all elements matching the given selector from the matched set

Example:

Copy code The code is as follows:
$("td:not(:first, :last) ").css("background", "red"); //Except for the first and last cells, the background color of other cells is red

9. :header selector

Format:

Copy code The code is as follows:
$(":header")
for selection All heading elements like h1, h2, h3

10. :animated selector

Format:

Copy code The code is as follows:
$("selector:animated")
is used Select all elements that are performing animation

Simple example:

Copy code The code is as follows:
 
 
 
 
过滤选择器 
 
 
 
 

简单过滤选择器应用示例

 
 
   
     
     
     
     
     
   
   
     
     
     
     
     
   
   
     
     
     
     
     
   
 

效果图如下所示：

希望本文所述对大家的jQuery程序设计有所帮助。

Related labels：
jquery usage filter Selector
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