jQuery+PHP gets the Text and Value selected by Select option (with selected city example)_PHP tutorial

PHP代码：

[php]  

 

 

    所在城市  

     

        选择所在城市  

       <%foreach from=$supportcity item=city key=k%>  

        selected<%/if%> ><%$city.city_name%>  

        <%/foreach%>  

   

 

 

 

所在地区  

<%foreach from=$supportcity item=city key=k%>  

     

        选择所在地区  

        <%foreach from=$city.areas item=area%>  

            <%$area.area%>  

        <%/foreach%>  

   

 

<%/foreach%>  

 

 

Jquery代码：

[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();  

}  

 

下面是详细的：

jquery radio取值,checkbox取值,select取值,radio选中,checkbox选中,select选中,及其相关设置

 

获取一组radio被选中项的值:var item = $('input[name=items][checked]').val();

获取select被选中项的文本:var item = $("select[@name=items] option[@selected]").text();

获取select被选中项的文本 :var item = $("select[name=items] option[selected]").text(); 或$("select[name=items]").find("option:selected").text();

select下拉框的第二个元素为当前选中值:$('#select_id')[0].selectedIndex = 1;

select下拉框value = 'val'的元素为当前选中项:$("select[name=items] option[value='val']").attr("selected","selected");

radio单选组的第二个元素为当前选中项 :$('input[@name=items]').get(1).checked = true; 或$('input[name=items]').attr("checked", '1′);

radio的value = 'val'的元素为当前选中项:$('input[name=items] [value='val']').attr("checked","checked");

 

获取值:

文本框,文本区域:$("#txt").attr("value");

多选框checkbox:$("input[name='checkbox':checked]").each(function(){

var val = $(this).val();

});

单选组radio: $("input[type=radio][checked]").val();

下拉框select的value值: $('select').val();

下拉框select选中的text 值:$("select").find("option:selected").text();

控制表单元素:

文本框,文本区域:$("#txt").attr("value","); //清空内容

                       $("#txt").attr("value",'11′); //填充内容

多选框checkbox:

checkbox的第二个元素被打勾:$("input[name=items]").get(1).checked = true; //打勾

                                                                                                                                                                                   

Tick the element with value='val' in the checkbox: $("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) //Determine whether it has been checked

Radio selection group radio: $("input[type=radio]").attr("checked",'2′);//Set the item with value=2 as the currently selected item

Drop-down box select: $("#sel").attr("value",'-sel3′);//Set the item with value=-sel3 as the currently selected item

$("2222").appendTo("#sel")//Add drop-down Box option

$("#sel").empty();//Clear the drop-down box

jQuery gets the Value selected by Radio

Code

$("input[name='radio_name'][checked]").val(); //Select the Value value of the selected Radio

$("#text_id").focus(function(){//code...}); //Event triggered when object text_id gets focus

$("#text_id").blur(function(){//code...}); //Event triggered when object text_id loses focus

$("#text_id").select(); //Make the Vlaue value of the text box selected

$("input[name='radio_name'][value='Value of the Radio to be selected'").

attr("checked",true); //Set Radio to the selected state according to the Value value

jQuery gets the Value value selected by CheckBox

$("input[name='checkbox_name'][checked]"); //Select the collection of selected CheckBox elements. If you want to get the Value value, you need to traverse this collection

$($("input[name='checkbox_name'][checked]")).

each(function(){arrChk+=this.value + ',';});//Traverse the collection of selected CheckBox elements and get the Value value

$("#checkbox_id").attr("checked"); //Get the status of a CheckBox (whether it is selected, return true/false)

$("#checkbox_id").attr("checked",true); //Set the status of a CheckBox to checked (checked=true)

$("#checkbox_id").attr("checked",false); //Set the status of a CheckBox to unchecked (checked=false)

$("input[name='checkbox_name']").attr

("checked",$("#checkbox_id").attr("checked"));//Based on items 3, 4, and 5, you can analyze the meaning of this code

$("#text_id").val().split(","); //Separate the Value values ​​of Text with ',' and return an array

jquery1.3.2

ISDARK: $("input[@type=radio][name=ISDARK][checked]").val()

$("input[name=radioname][value=radio value]").attr("checked","checked");

http://www.bkjia.com/PHPjc/477749.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/477749.htmlTechArticlePHP code: [php] li span class=l2 city/span select class=city option value=Select location City/option %foreach from=$supportcity item=city key=k% option value=%$k% %if $now...