jQuery Filter


$("Element").eq(index)

Get the nth element, this method is counting from the 0.$("div").eq(5) means to get the 6th div in this page


$("Element").hasClass("className")

Checks whether the current element contains a particular class, and returns true if there is one.


$("Element").filter("Expression")

Filter out the set of elements that match the specified expression.This method is used to narrow the range of matches.Multiple expressions can be separated by commas.For example, $("input", ".Names", ": last") indicates that the last input using the Names class selector has been filtered out.


$("Element").filter("function")

Same as above


$("Element").is("Expression")

Use an expression to check the currently selected set of elements and return true if at least one of the elements matches the given expression.For example, $("div: first [class = 'abc']").parent().is("body")


$("Element").map("callback")

Converts a set of elements to another array(whether or not an array of elements)


$("Element").slice(start, end)
$("Element").slice(start, end), start(Integer)

The starting position of the subset.The first element is 0.If negative, it can be selected from the tail of the collection.End(Integer):(Optional) Ends the selection of its own position, if not specified, it is the end of itself.


$("Element").not("Expression")

Inverse / NOT



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