jquery Fetch Form Value Implementation code summary

<input type= "text" name= "Textname" id= "text_id" "value=" ">
<!--the rest please add it yourself. It is important to have TYPE.NAME.ID and so on, in general, these are some-->

2. Below to see how to get the various values in the form, and so on;

function Get_form_value () {
/* Get the Text.areatext value * *
var textval = $ ("#text_id"). attr ("value");/or
var textval = $ ("#text_id"). Val ();
/* Get the value of the radio button * *
var Valradio = $ ("input[@type =radio][@checked]"). Val ();
/* Get check box value * *
var checkboxval = $ ("#checkbox_id"). attr ("value");
/* Get the value of the Drop-down list * *
var selectval = $ (' #select_id '). Val ();
}
3. Additional processing of the form:

//Control form elements:
//text box, text area:
$ ("#text_id"). attr ("Value", "");/empty content
$ ("#text_id"). attr ("value", ' Test '); Fill content
//Multi-Marquee checkbox:
$ ("#chk_id"). attr ("Checked", "");/unchecked value
$ ("#chk_id"). attr ("Checked", true);//Selected value
if ($ ("#chk_id"). attr (' checked ') ==undefined)//Determine if
//Radio Group Radio:
$ ("input[@type =radio]"). attr (" Checked ", ' 10")//Set VALUE=10 radio button for the current selection
//dropdown box select:
$ ("#select_id"). attr ("value", ' test ');//Set value= The project for test is the currently selected item
$ ("<option value= ' test ' >test</option><option value= ' test2 ' >test2</option > "). Appendto (" #select_id ")//Add the option
$ (" #select_id ") of the Drop-down box. Empty ()//Empty Drop-down box

jquery Fetch Radio The value of the radio button
$ ("Input[name= ' Items ']:checked"). Val ();
jquery Radio value, checkbox value, select Value, Radio selected, CheckBox selected, select selected, and related
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");
Multiple-selection box checkbox:$ ("#checkbox_id"). attr ("value");
Radio Group Radio: $ ("input[type=radio][checked]"). Val ();
Dropdown box Select: $ (' #sel '). Val ();

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

Multi-Marquee checkbox: $ ("#chk1"). attr ("Checked", "");/no tick.
$ ("#chk2"). attr ("Checked", true);/tick
if ($ ("#chk1"). attr (' checked ') ==undefined)//judge whether it has been ticked

Radio Group Radio: $ ("Input[type=radio]"). attr ("Checked", ' 2 ');//Set value=2 project is currently selected
Dropdown box Select: $ ("#sel"). attr ("value", '-sel3 ');//Set VALUE=-SEL3 item as current selection
$ ("<option value= ' 1 ' >1111</option><option value= ' 2 ' >2222</option>"). Appendto ("#sel")// Option to add a drop-down box
$ ("#sel"). empty ();//Empty Drop-down box

2.jquery Radio value, checkbox value, select Value, Radio selected, CheckBox selected, select selected, and related
3. Gets the value of a set of radio selected items

A good memory is better than a bad pen, an excerpt.
jquery Radio value, checkbox value, select Value, Radio selected, CheckBox selected, select selected, and related
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");
Multiple-selection box checkbox:$ ("#checkbox_id"). attr ("value");
Radio Group Radio: $ ("input[@type =radio][@checked]"). Val ();
Dropdown box Select: $ (' #sel '). Val ();
Control form elements:
text box, text area: $ ("#txt"). attr ("Value", "");/empty content
$ ("#txt"). attr ("value", ' 11 ');//fill content
Multi-Marquee checkbox: $ ("#chk1"). attr ("Checked", "");/no tick.
$ ("#chk2"). attr ("Checked", true);/tick
if ($ ("#chk1"). attr (' checked ') ==undefined)//judge whether it has been ticked
Single-select group radio: $ ("input[@type =radio]"). attr ("Checked", ' 2 ');//Set value=2 project is currently selected
Dropdown box Select: $ ("#sel"). attr ("value", '-sel3 ');//Set VALUE=-SEL3 item as current selection
$ ("<option value= ' 1 ' >1111</option><option value= ' 2 ' >2222</option>"). Appendto ("#sel")// Option to add a drop-down box
$ ("#sel"). empty ();//Empty Drop-down box
----------------------------------------------------------------------------------------------------
Traversing option and adding, removing option
function Changeshipmethod (shipping) {
var len = $ ("select[@name =ishiptype] option"). length
if (shipping.value!= "CA") {
$ ("select[@name =ishiptype] option"). each (function () {
if ($ (this). val () = 111) {
$ (this). Remove ();
}
});
}else{
$("
<option value= ' a ' >ups ground</option>
"). Appendto ($ (" select[@name =ishiptype] "));
}
}

Get the dropdown?? Value of Wei Ni x
$ (#testSelect option:selected '). Text ();
or $ ("#testSelect"). Find (' option:selected '). Text ();
or $ ("#testSelect"). Val ();

1, dropdown box:
var cc1 = $ (". FORMC select[@name = ' country '] option[@selected]"). Text (); Gets the text of the selected item in the Drop-down menu (note that there are spaces in the middle)
var CC2 = $ ('. FORMC select[@name = ' country '] '). Val (); Gets the value of the selected item in the Drop-down menu
var cc3 = $ ('. FORMC select[@name = ' country '] '). attr ("id"); Gets the id attribute value of the selected item in the Drop-down menu
$ ("#select"). Empty ()//Empty Drop-down box//$ ("#select"). HTML (");
$ ("<option value= ' 1 ' >1111</option>"). Appendto ("#select")//option to add a drop-down box
A little explanation:
1.select[@name = ' country '] option[@selected] Represents the Name property,
and the attribute value is the option element with the selected attribute inside the Select element of ' country ';
It can be seen that a @ begins with a property that follows.
2. Radio Box:
$ ("input[@type =radio][@checked]"). Val (); Gets the value of the selected item in the Radio box (note that there are no spaces in the middle)
$ ("input[@type =radio][@value =2]"). attr ("Checked", ' checked '); Sets the value=2 of the radio box to the selected state. (Note that there are no spaces in between)
3. check box:
$ ("input[@type =checkbox][@checked]"). Val (); Gets the value of the first item selected in the check box
$ ("input[@type =checkbox][@checked]"). each (function () {//, because the check box is typically selected for more than one, you can cycle the output
Alert ($ (this). Val ());
});
$ ("#chk1"). attr ("Checked", "");/no tick.
$ ("#chk2"). attr ("Checked", true);/tick
if ($ ("#chk1"). attr (' checked ') ==undefined) {}//judge whether it has been ticked

Of course jquery's selector is powerful. There are many other ways.
<script src= "jquery-1.2.1.js" type= "Text/javascript" ></SCRIPT>
<script language= "javascript "Type=" Text/javascript
$ (document). Ready (function () {
$ ("#selectTest"). Change (function ()
{
// Alert ("Hello");
//alert ($ ("#selectTest"). attr ("name");
//$ ("a"). attr ("href", "xx.html");
//window.location.href= "xx.html";
//alert ($ ("#selectTest"). Val ());
Alert ($ ("#selectTest option[@selected]"). text ());
$ ("#selectTest"). attr ("Value", "2");
});
});
</script>
<a href= "#" >aaass</a>
<!--drop-down box
<select id= "Selecttest" name= Selecttest ""
<option value= "1" >11</OPTION>
<option value= "2" >22</OPTION>
<option value= "3" >33</option>
<option value= "4" >44</OPTION>
<option value= "5" >55</option>
<option value= "6" >66</OPTION>
</select>