About the jquery selector

In our front desk operation, in many cases, we need to filter the different page objects according to certain business needs, such as selecting all the checkboxes, for example, choose to say that there is input, and even more responsible screening. This time the jquery selector can say something about our very good helper, the jquery selector is incredibly powerful, here is a simple summary of common elements to find the method

$ ("#myELement") select an element with an ID value equal to myelement, the ID value cannot be duplicated in the document only one ID value is myelement so get the unique element

$ ("div") selects all div tag elements and returns an array of DIV elements

$ (". MyClass") Select all elements of CSS that use the MyClass class

$ ("*") selects all the elements in the document and can be selected in a variety of ways: for example $ ("#myELement, Div,.myclass")

Cascade selector:

$ ("Forminput") Select all the input elements in the form element

$ ("#main >*") Select all child elements with an ID value of main

$ ("label +input") selects all of the next INPUT element nodes of the label element, and the test selector returns all input label elements that follow the label tag directly followed by an input tag

$ ("#prev ~div") sibling selector that returns all the div tags that belong to the same parent element for the label element with ID prev

Basic Filter Selector:

$ ("Tr:first") selects the first of all TR elements

$ ("Tr:last") selects the last of all TR elements

$ ("Input:not (: Checked) +span")

Filter out: All input elements of the checked selector

$ ("Tr:even") Select all of the TR elements of the section 0,2,4 ... Element (Note: The sequence number starts at 0 because the selected number of elements is an array.)

$ ("tr:odd") Select all of the TR elements of the section 1,3,5 ... An element

$ ("Td:eq (2)") select the TD element with the number 2 in all TD elements

$ ("TD:GT (4)") Select all TD elements in the TD element with an ordinal greater than 4

$ ("Td:ll (4)") selects all TD elements in the TD element with an ordinal less than 4

$ (": Header")

$ ("div:animated")

Content Filter Selector:

$ ("Div:contains (' John ')") Select all the elements in the div that contain the John text

$ ("Td:empty") Select all the arrays of TD elements that are empty (nor include text nodes)

$ ("Div:has (P)") Select all DIV elements that contain p tags

$ ("td:parent") Select all the element array with TD as parent node

Visual Filter Selector:

$ ("Div:hidden") Select all the hidden div elements

$ ("div:visible") Select all of the visual DIV elements

Attribute Filter Selector:

$ ("Div[id]") Select all DIV elements that contain the id attribute

$ ("input[name= ' newsletter ')" selects all the name attributes equal to the INPUT element of ' newsletter '

$ ("input[name!= ' newsletter ')" selects all the name attribute not equal to ' newsletter ' INPUT element

$ ("input[name^= ' News ')") Select all the name attributes to start with ' news ' INPUT element

$ ("input[name$= ' News ')") Select all the name attributes to end with ' news ' INPUT element

$ ("input[name*= ' Man ')") Select all the name attributes that contain the ' news ' INPUT element

$ ("input[id][name$= ' Man ')") can use multiple attributes for federated selection, which is to get all the elements that contain the id attribute and then the property ends with a man

child element Filter Selector:

$ ("Ulli:nth-child (2)"), $ ("ul Li:nth-child (Odd)"), $ ("Ulli:nth-child (3n + 1)")

$ ("Divspan:first-child") returns an array of the first child nodes of all DIV elements

$ ("Divspan:last-child") returns an array of the last nodes of all DIV elements

$ ("Divbutton:only-child") returns an array of all child nodes that have only one child node in all Div

Form element selector:

$ (": Input") Select all form input elements, including input, textarea, select, and button

$ (": Text") Select all text input elements

$ (":p assword") Select all password input elements

$ (": Radio") Select all radio input elements

$ (": CheckBox") Select all the checkbox input elements

$ (": Submit") Select all the submit input elements

$ (": Image") Select all the image input elements

$ (": Reset") Select all the reset input elements

$ (": Button") Select all the button input elements

$ (": File") Select all the file input elements

$ (": Hidden") Select all input elements of type hidden or hidden fields of the form

Form element Filter Selector:

$ (": Enabled") Select all the actionable form elements

$ (":d isabled") Select all the non-actionable form elements

$ (": Checked") Select all of the checked form elements

$ ("select Option:selected") selects all selected elements in the child element of the Select

Now more and more think of the front desk JS powerful, no matter what function, only you can not realize that the power of JS is not just the beginning of their own understanding of the simple function so simple, the more the use of really is the more admire AH.

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About the jquery selector