jquery Gets the text and value selected by select:Syntax Explanation:1. $ ("#select_id"). Change (function () {//code ...}); Add an event for Select, which is triggered when one of the items is selected2. Var checktext=$ ("#select_id"). Find ("option:selected"). Text (); Gets the text selected by the Select3. Var checkvalue=$ ("#select_id"). Val (); Gets the value selected by Select4. Var checkindex=$ ("#select_id"). Get (0). SelectedIndex; Gets the index value of the select selection5. Var maxindex=$ ("#select_id option:last"). attr ("index"); Gets the maximum index value of the Selectjquery Sets the text and value selected for select:Syntax Explanation:1. $ ("#select_id"). Get (0). selectedindex=1; Set the Select index value to 1 to select2. $ ("#select_id"). Val (4); Sets the value of select to 4 for the item selected3. $ ("#select_id option[text= ' jQuery ']"). attr ("selected", true); Set the text value of select to the item selected for jqueryjquery Add/Remove option for select:Syntax Explanation:1. $ ("#select_id"). Append ("<option value= ' value ' >Text</option>"); Append an option to the Select ( drop-down item)2. $ ("#select_id"). Prepend ("<option value= ' 0 ' > Please select </option>"); Insert an option for select (first position)3. $ ("#select_id option:last"). Remove (); Delete index value in select maximum option (last)4. $ ("#select_id option[index= ' 0 ']"). Remove (); Delete Option with index value 0 in select (first)5. $ ("#select_id option[value= ' 3 ']"). Remove (); Delete Option for value= ' 3 ' in select5. $ ("#select_id option[text= ' 4 ']"). Remove (); Delete option for text= ' 4 ' in selecthttp://www.cnblogs.com/SAL2928/archive/2008/10/28/1321285.html jquery Radio value, checkbox value, select Value, Radio selected, CheckBox selected, select selected, and its relatedgets the value of a set of radio selected itemsvar item = $ (' input[@name =items][@checked] '). Val ();gets the text of the Select selected itemvar 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");Multi Box 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", "");//No tick$ ("#chk2"). attr ("Checked", true);//Tickif ($ ("#chk1"). attr (' checked ') ==undefined)//Determine if a tick has been made Radio Group Radio: $ ("input[@type =radio]"). attr ("Checked", ' 2 ');//Set value=2 for the currently selected itemDrop- down box select: $ ("#sel"). attr ("value", '-sel3 ');//Set the VALUE=-SEL3 item as the 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 ---------------------------------------------------------------------------------------------------- //Traverse option and Add, remove optionfunction Changeshipmethod (shipping) {var len = $ ("select[@name =ishiptype] option"). Lengthif (shipping.value! = "CA") {$ ("select[@name =ishiptype] option"). each (function () {if ($ (this). val () = = 111) {$ (this). Remove ();}});}else{$ ("<option value= ' 111 ' >ups ground</option>"). AppendTo ($ ("select[@name =ishiptype]"));}} //Get the Select value of the dropdown $ (#testSelect option:selected '). Text ();or $ ("#testSelect"). Find (' option:selected '). Text ();or $ ("#testSelect"). Val ();//////////////////////////////////////////////////////////////////a bad memory can be collected:1, drop-down box: var cc1 = $ (". FORMC select[@name = ' country '] option[@selected]"). text ();////Get the selected item (note the space in the middle) of the drop-down menuvar cc2 = $ ('. FORMC select[@name = "Country"]). Val ();//Get the value of the selected item in the drop-down menuvar cc3 = $ ('. FORMC select[@name = "Country"]). attr ("id");//Get the value of the ID property of the selected item in the drop-down menu$ ("#select"). empty ();//Empty the 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] means having the Name property,and the option element with the selected attribute in the Select element with the attribute value of ' country ';you can see that there is an @ at the beginning of the property is followed by. 2, Radio box:$ ("input[@type =radio][@checked]"). Val ();//Get 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 ');//Set the Radio box to value=2 the selected state. (note there is no space in the middle) 3, check box:$ ("input[@type =checkbox][@checked]"). Val ();//Gets the value of the check box for the first item selected$ ("input[@type =checkbox][@checked]"). each (function () {////Because the check box is generally selected as multiple, you can loop the outputalert (This). Val ());}); $ ("#chk1"). attr ("Checked", "");//Not ticked$ ("#chk2"). attr ("Checked", true);//Tickif ($ ("#chk1"). attr (' checked ') ==undefined) {}//Determine if a tick has been made Of Course the jquery 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>jquery Radio value, checkbox value, select Value, Radio selected, CheckBox selected, select selected, and its related to get a set of radio values of the selected itemvar item = $ (' input[@name =items][@checked] '). Val ();gets the text of the Select selected itemvar 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");Multi Box 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 contentmultiple Marquee checkbox: $ ("#chk1"). attr ("Checked", "");//No tick$ ("#chk2"). attr ("Checked", true);//Tickif ($ ("#chk1"). attr (' checked ') ==undefined)//Determine if a tick has been madeRadio Group Radio: $ ("input[@type =radio]"). attr ("Checked", ' 2 ');//Set value=2 for the currently selected itemDrop- down box select: $ ("#sel"). attr ("value", '-sel3 ');//Set the VALUE=-SEL3 item as the current selection$ ("<optionvalue= ' 1 ' & gt;1111</option><optionvalue= ' 2 ' >2222</option& gt;"). AppendTo ("#sel")//option to add a drop-down box$ ("#sel"). empty ();//Empty drop-down box gets the value of a set of radio selected itemsvar item = $ (' input[@name =items][@checked] '). Val ();gets the text of the Select selected itemvar 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");Multi Box 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 contentmultiple Marquee checkbox: $ ("#chk1"). attr ("Checked", "");//No tick$ ("#chk2"). attr ("Checked", true);//Tickif ($ ("#chk1"). attr (' checked ') ==undefined)//Determine if a tick has been madeRadio Group Radio: $ ("input[@type =radio]"). attr ("Checked", ' 2 ');//Set value=2 for the currently selected itemDrop- down box select: $ ("#sel"). attr ("value", '-sel3 ');//Set the VALUE=-SEL3 item as the 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 boxreprint: http://www.cnblogs.com/shengxiang/archive/2011/09/06/2168557.html
jquery Gets the value of the Select,dropdownlist,checkbox drop-down list box
