Suppose the page has the following drop-down box Gets the value of the first option in the drop-down box, the value of the last option, and the value of the second option
jquery Gets the value of option and operates on option
This article introduces jquery to get the value of option and the operation of option, below is a good example analysis and sample code, interested friends can understand the next
jquery Gets the Select element and selects the text and value:Copy the code code as
jquery Gets the Select element and selects the text and value:
Copy Code code as follows:
$ ("#select_id"). Change (function () {//code ...}); Adds an event for a select that fires when one of the items is selected
var checktext=$ ("#select_id"). Find ("option:selected"). Text (); Gets the text selected by select
var checkvalue=$ ("#select_id"). Val (); Gets the value of the Select selection
var checkindex=$ ("#select_id"). Get (0). SelectedIndex; Get the index value selecte
Symptoms
You cannot select any of the options in the Microsoft Office Access 2007-year option group control. This problem occurs in Form view and Design view. In addition, this problem occurs if the following conditions are true:
1.
Creates a rectangular control on a form.
2.
Creates an option group control on a rectangular control.
3.
Create other controls o
Query gets the SELECT element and selects the text and value:Query gets the Select element and sets the text and value:jquery add/remove option item for select Element:$ ("#select_id"). Append ("optionvalue= ' Value '>Textoption>"); Append an option (drop-down) $ ("#select_id") for select. prepend ("optionvalue= ' 0 '>Please selectoption>"); Insert an option (fir
Recently used in the work of the echarts to make a chart, search on the Internet a lot of examples are almost the same in the foreground to write some JS, and then the variable through AJAX or through the collection of ways to plug in, this way once a page of a number of charts, it will be abnormal chaos, Accidental in open source China saw someone made a Echarts object jar package, in the background of the perfect package returned an option in the fo
jquery Gets the Select element and selects the text and value:Copy the code code as follows:$ ("#select_id"). Change (function () {//code ...}); Add an event for Select, which is triggered when one of the items is selectedvar checktext=$ ("#select_id"). Find ("option:selected"). Text (); Gets the text selected by the Selectvar checkvalue=$ ("#select_id"). Val (); Gets the value selected by selectvar checkindex=$ ("#select_id"). Get (0). SelectedIndex; Gets the index value of the Select selection
Gets the text of the Select selected item: var item = $ ("select[@name =items] option[@selected]"). Text ();
Gets the text of the Select selected item: var item = $ ("Select[name=items] option[selected]"). Text (); or $ ("Select[name=items]"). Find ("option:selected"). Text ();
Value value of the dropdown box select: $ (' select '). val ();
Dropdown box Select the selected text value: $ ("select"). Find
jquery Gets the Select element and selects the text and value: 1. $ ("#select_id"). Change (function () {//code ...}); Adds an event for a select that fires when one of the items is selected2. Var checktext=$ ("#select_id"). Find ("option:selected"). Text (); Gets the text selected by select3. Var checkvalue=$ ("#select_id"). Val (); Gets the value of the Select selection4. Var checkindex=$ ("#select_id"). Get (0). SelectedIndex; Get the index value selected by select5. Var maxindex=$ ("#select_
1. Create a Select dynamically
Copy Code code as follows:
function Createselect () {
var myselect = document.createelement ("select");
Myselect.id = "Myselect";
Document.body.appendChild (Myselect);
}
2. Add Options option
Copy Code code as follows:
function AddOption () {
To find an object based on its ID,
var Obj=document.getelementbyid (' Myselect ');
Add an
The Millet 5s Developer option opens the tutorial:
1, we open on the phone to the desktop, and then click "Settings" and then click "About the Phone"-"MIUI version", multiple clicks on the "MIUI version" system will prompt to open the developer option.
2, after the open we return to the Setup interface to find "More Settings", and then pull down to find "developer Options"
Now the mobile
Use options (option)
type 'T option = | None | Some of 'T
Let's look at an example:
> let people = [ ("Adam", None); ("Eve" , None); ("Cain", Some("Adam","Eve")); ("Abel", Some("Adam","Eve")) ];; val people : (string * (string *string) option) list
Use pattern matching (patterns matching) to gene
1. Dynamic creation of SELECTfunction Createselect () {var myselect = document.createelement ("select");Myselect.id = "Myselect";Document.body.appendChild (Myselect);}2. Add Options optionfunction AddOption () {Find objects by ID,var Obj=document.getelementbyid (' Myselect ');Add an optionObj.add (New Option ("text", "value")); This only works in IE.Obj.options.add (New Option ("text", "value")); This compa
Linux grep option, linuxgrep Option
Grep-I disable case sensitivity
Grep-v print all does not contain .. (Some entries are blocked)
Grep-l print the file name in the inclusion Mode
Grep-c prints the number of rows containing the pattern,
Grep-w: print the words in the inclusion Mode
The R Command Option of grep on linux
It has no meaning. It is used for recursion
When you give user permissions or role, you often use the WITH admin option and with GRANT option,In use, it may be easy to confuse the situation, now the similarities and differences between their points are summarized as follows:Same point:-Two can both give the userPermissions, you can also use it when assigning a roleGRANT CREATE SESSION to EMI with ADMIN OPTION
gets select: Gets the Select selected text: $ ("#ddlRegType"). Find ("option:selected")). text (); Gets the value selected by select: $ ("#ddlRegType"). Val (); Gets the selected index of select: $ ("#ddlRegType"). Get (0). SelectedIndex; Set Select: Sets the index selected by select: $ ("#ddlRegType"). Get (0). Selectedindex=index;//index is the indexed valueSet Select to select the value: $ ("#ddlRegType"). attr ("Value", "Normal "); $("#ddlRegType"). Val ("Normal")); $("#ddlRegType"). Get (0)
• Authorization via Grantsyntax:GRANT object_priv[(columns)][on object] to {user|role|public} [with GRANT OPTION] • Recycling through revokesyntax:REVOKE object_priv[(columns)][on object] from {user[,user...]| Role|public} [CASCADE constrints] Revoke system permissions with admin OPTION (permission reclamation does not cascade for system permissions and roles)Revoke object permissions with Grant
Obtain select:
Obtain the selected text in the SELECT statement:
$ ("# Ddlregtype"). Find ("option: Selected"). Text ();
Obtain the value selected by the SELECT statement:
$ ("# Ddlregtype"). Val ();
Obtain the index selected by the SELECT statement:
$ ("# Ddlregtype"). Get (0). selectedindex;
Set select:
Set the index selected by select:
$ ("# Ddlregtype"). Get (0). selectedindex = index; // index indicates the index value.
With grant option: permissions are revoked in revoke cascade.
With admin option: permissions are not revoked in revoke cascade.
Reprinted on http://blog.chinaunix.net/u2/75347/showart_1129674.html
Similarities:-Both can be used only when user permission is granted or when role is granted.Grant create session to EMI with admin option;Grant create session to role
The select label in HTML, also the Asp:dropdownlist control in asp.net.
How JavaScript operates on them
first, the basic understanding
Copy Code code as follows:
var e = document.getElementById ("Selectid");
E. options= new Option ("text", "value");
Create an option object that creates one or more Options are arrays that can hold multiple
1:options[] Array of properties:
Length P
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