JQuery + PHP get the Text and Value selected by Selectoption (with the selected city instance)

PHP code: [php] & lt; li & gt; & lt; spanclass = & quot; l2 & quot; & gt; City & lt;/span & gt; & lt; selectclass = & quot; city & quot; & gt; & lt; optionvalue = & quot; & gt; select the city & PHP code: [php]

CitySelect the city<% Foreach from = $ supportcity item = city key = k %>Selected <%/if % >>< % $ city. city_name %><%/Foreach %>

Region <% foreach from = $ supportcity item = city key = k %>Select Region<% Foreach from = $ city. areas item = area %><% $ Area. area %><%/Foreach %><%/Foreach %>

Jquery code: [javascript] $ ("select. city "). change (function () {var ccode = $ (this ). val (); $ ("select. area "). hide (); if (ccode) {$ ("select. area [citycode = "+ ccode +"] "). show () ;}}); var sltcity =$ ("select. city "). val (); if (sltcity) {$ ("select. area [citycode = "+ sltcity +"] "). show ();} is detailed below: jquery radio value, checkbox value, select value, radio selected, checkbox selected, select selected, and related settings to obtain the value of a set of radio selected items: var item =$ ('input [name = items] [checked] '). val (); get the text of the selected select item: var item =$ ("select [@ name = items] option [@ selected]"). text (); obtain the text of the selected select item: var item = $ ("select [name = items] option [selected]"). text (); or $ ("select [name = items]"). find ("option: selected "). text (); the second element in the select drop-down box is the selected value: $ ('# select_id') [0]. selectedIndex = 1; the select drop-down box value = 'Val' element is currently selected: $ ("select [name = items] option [value = 'Val']"). attr ("selected", "selected"); the second element of the radio Group is the selected item: $ ('input [@ name = items] '). get (1 ). checked = true; or $ ('input [name = items] '). attr ("checked", '1'); the value = 'Val' of radio is the currently selected item: $ ('input [name = items] [value = 'Val'] '). attr ("checked", "checked"); value: text box, text area: $ ("# txt "). attr ("value"); multiple choice box checkbox: $ ("input [name = 'checkbox': checked]"). each (function () {var val = $ (this ). val () ;}); single-choice radio: $ ("input [type = radio] [checked]"). val (); value of select in the drop-down box: $ ('select '). val (); select selected text value in the drop-down box: $ ("select "). find ("option: selected "). text (); control form element: text box, text area: $ ("# txt "). attr ("value", "); // clear content $ (" # txt "). attr ("value", '11'); // The multi-choice box for filling content checkbox: The second element of the checkbox is checked: $ ("input [name = items]"). get (1 ). checked = true; // Check $ ("input [name = items]"). get (1 ). checked = false; // check the value of the checkbox before the 'Val 'element: $ ("input [name = item] [value = 'Val']"). attr ("checked", true); or $ ("input [name = item] [value = 'Val']"). attr ("checked", "checked"); if ($ ("input [name = item] [value = 'Val']"). attr ('checked') = true) // determines whether the radio group radio has been checked: $ ("input [type = radio]"). attr ("checked", '2'); // select: $ ("# sel") for the project whose value is set to 2 "). attr ("value", '-sel3'); // set the value =-sel3 project as the currently selected item $ (" 1111 2222"). AppendTo ("# sel") // Add option $ ("# sel") in the drop-down box "). empty (); // clear the drop-down box jQuery to obtain the Value selected by Radio code $ ("input [name = 'Radio _ name'] [checked]"). val (); // select the Value of the selected Radio $ ("# text_id "). focus (function () {// code ...}); // event triggered when the object text_id gets the focus $ ("# text_id "). blur (function () {// code ...}); // event triggered when the object text_id loses focus $ ("# text_id "). select (); // Set the Vlaue value of the text box to the selected status $ ("input [name = 'Radio _ name'] [Value = 'value to select the value of radio '"). attr ("checked", true ); // Set Radio to the selected status based on the Value. jQuery gets the Value selected for the CheckBox $ ("input [name = 'checkbox _ name'] [checked]"); // select the set of checked CheckBox elements. if you want to get the Value, you need to traverse the set $ ("input [name = 'checkbox _ name'] [checked]").. each (function () {arrChk + = this. value + ',';}); // traverses the set of the selected CheckBox elements to obtain the Value $ ("# checkbox_id "). attr ("checked"); // get the status of a CheckBox (true/false if any) $ ("# checkbox_id "). attr ("checked", true); // Set the status of a CheckBox to selected (checked = true) $ ("# checkbox_id "). attr ("checked", false); // sets the status of a CheckBox to unselected (checked = false) $ ("input [name = 'checkbox _ name']"). attr ("checked", $ ("# checkbox_id "). attr ("checked"); // according to 3, 4, 5, you can analyze the meaning of the code $ ("# text_id "). val (). split (","); // separates the Value of Text with ',' and returns an array jquery1.3.2ISDARK: $ ("input [@ type = radio] [name = ISDARK] [checked]"). val () $ ("input [name = radioname] [value = radio value]"). attr ("checked", "checked ");