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jquery operation input

Source: Internet
Author: User
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Gets the selected value
Gets the value of a set of radio selected items
var item = $ (' input[@name =items][@checked] '). Val ();

Gets the text of the Select selected item
var item = $ ("select[@name =items] option[@selected]"). Text ();

The second element of the Select drop-down box is the currently selected value
$ (' #select_id ') [0].selectedindex = 1;

Radio the second element of a radio group is the currently selected value
$ (' input[@name =items] '). Get (1). checked = true;

Get Value:
text box, text area:
$ ("#txt"). attr ("value");

$ ("#txt"). Val ();

Multiple marquee checkbox:
$ ("#checkbox_id"). attr ("value");

Radio Group Radio:
$ ("input[@type =radio][@checked]"). Val ();

Drop-down box select:
$ (' #sel '). Val ();

Control form elements:
text box, text area:
$ ("#txt"). attr ("Value", "");//Clear Contents
$ ("#txt"). attr ("value", ' 11 ');//fill content

Multiple marquee checkbox:
$ ("#chk1"). attr ("Checked", "");//Not ticked
$ ("#chk2"). attr ("Checked", true);//tick
if ($ ("#chk1"). attr (' checked ') ==undefined)//Determine if a tick has been made

Radio Group Radio:
$ ("input[@type =radio]"). attr ("Checked", ' 2 '); Set the value=2 item as the currently selected item

Drop-down box select:
$ ("#sel"). attr ("value", '-sel3 ');//Set the VALUE=-SEL3 item as the current selection
$ ("<optionvalue= ' 1 ' >1111</option>& lt;optionvalue= ' 2 ' >2222</option>"). AppendTo ("#sel") option to add a drop-down box
$ ("#sel"). empty ();//Empty drop-down box

=====================

In jquery, use $ ("#id") to get the input element of the page, which is equivalent to document.getElementById ("element") However, it is a jquery object instead of a DOM The element object. Value is a property of the DOM element object. Therefore, use $ ("#id"). Value cannot be taken to the values: val = $ ("#id") [0].value;$ ("#id") [0].value = " New value "; Assignment: $ (" #id ") [0].value =" New value ";
or $ ("#id"). Val ("new value"); val = $ ("#id"). attr ("value");

==================================

jquery input Text Radio Check Select operation2009-04-29 15:36<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<meta http-equiv= "Content-type" content= "text/html; Charset=utf-8 "/>
<title> Untitled Document </title>

<script src= "Jquery-starterkit/lib/jquery-1.3.2.min.js" type= "Text/javascript" ></script>


<body>
<input type= "text" id= "DD" name= "DD" value= "DDS"/>dd

<input name= "RR" id= "RR" type= "Radio" value= "/&GT;FF"
<input name= "RR" id= "RR2" type= "Radio" value= "4"/>55

<input name= "ff" type= "checkbox" value= "AA"/&GT;JGDG
<input name= "ff" type= "checkbox" value= "GD"/&GT;JGDG

<select name= "ss" id= "SS" size= "1" >
<option value= "" ></option>
<option value= "8" >d</option>
<option value= "2" >g</option>
</select>

<br/>
<input type= "button" id= "button" value= "Pushbutton One"/>
<input type= "button" id= "JJ" value= "button two"/>
<br/>

<div id= "SSD" >fgfooHello</div>

</body>

<script language= "javascript" type= "Text/javascript" >
<!--
$ (function () {
$ ("#button"). Click (function () {


Get value
Alert ($ (' #dd '). Val ());//type=text
Alert ($ (' input[name=rr][checked] '). Val ());//type=radio
Alert ($ (' input[name=ff][checked] '). Val ());//type=checkbox
Alert ($ ("Select[name=ss] option[selected]"). Val ());//select is equal to alert ($ ("#ss option[selected]"). Val ());

Get text
Alert ($ ("Select[name=ss] option[selected]"). text ());//select


Control
/*//Disable #dd Disabled
$ ("#dd"). attr ("Disabled", "disabled");
Enable #dd unblock
$ ("#jj"). Removeattr ("Disabled"); */


$ (' input[name=rr] '). Get (0). checked = true;//The first radio is selected
Alert ($ ("input[type=radio] [value=34]"). attr ("Checked", ' checked ');//value=34 Radio is selected

Alert ($ ("input[type=checkbox] [VALUE=GD]"). attr ("Checked", ' checked '));//value=gd checkbox selected
$ (' input[name=ff] '). Get (1). checked = true;//The first check is selected



/*//SELECT option according to the text of option
count=$ ("#ss"). Find ("option"). Length;
for (Var i=0;i<count;i++)
{
if ($ ("#ss"). Get (0). Options[i].text = = ' d ')
{
$ ("#ss"). Get (0). options[i].selected = true;

Break
}
} */

$ ("<option value= ' 1 ' >1111</option><option value= ' >22s22</option>"). AppendTo ("#ss") ;//Add option
$ ("#ss option[value=8]"). Remove ("");//Remove <option value= ' 8 ' >d</option>

$ ("#ss"). attr ("Value", ' 2 '); Select option
$ (' #ss ') [0].selectedindex = 1;//Select option

$ ("#ss"). empty ();//Clear All option

/*//replacing text
var $thirdLink = $ ("#ssd");
var linkText = $thirdLink. Text (). replace (' foo ', ' Bar ');
$thirdLink. Text (LinkText); */



});
});
-
</script>

jquery operation input

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