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It should be noted that a lot of the code here is for versions before jquery 1.32 (later versions no longer support @), so just replace it with empty code and test it.
jQuery gets the Text and Value selected by Select:
Syntax explanation:
1. $("#select_id").change(function(){//code...}); //为Select添加事件,当选择其中一项时触发 2. var checkText=$("#select_id").find("option:selected").text(); //获取Select选择的Text 3. var checkValue=$("#select_id").val(); //获取Select选择的Value 4. var checkIndex=$("#select_id ").get(0).selectedIndex; //获取Select选择的 索引 值 5. var maxIndex=$("#select_id option:last").attr("index"); //获取Select最大的索引值
jQuery sets the Text and Value selected by Select:
Glossary explanation:
1. $("#select_id ").get(0).selectedIndex=1; //设置Select索引值为1的项选中 2. $("#select_id ").val(4); //设置Select的Value值为4的项选中 3. $("#select_id option[text='jQuery']").attr("selected", true); //设置Select的Text值为jQuery的项选中
jQuery adds/delete the Option item of Select:
Glossary explanation:
1. $("#select_id").append("<option value='Value'>Text</option>"); //为Select追加一个Option(下拉项) 2. $("#select_id").prepend("<option value='0'>请选择</option>"); //为Select插入一个Option(第一个位置) 3. $("#select_id option:last").remove(); //删除Select中索引值最大Option(最后一个) 4. $("#select_id option[index='0']").remove(); //删除Select中索引值为0的Option(第一个) 5. $("#select_id option[value='3']").remove(); //删除Select中Value='3'的Option 5. $("#select_id option[text='4']").remove(); //删除Select中Text='4'的Option
//遍历option和添加、移除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{ $("<option value='111'>UPS Ground</option>").appendTo($("select[@name=ISHIPTYPE]")); } } //取得下拉选单的选取值 $(#testSelect option:selected').text(); 或$("#testSelect").find('option:selected').text(); 或$("#testSelect").val();
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If you have a bad memory, you can save it:
1, drop-down box:
var cc1 = $(".formc select[@name='country'] option[@selected]").text(); //得到 下拉菜单 的选中项的文本(注意中间有空格) var cc2 = $('.formc select[@name="country"]').val(); //得到下拉菜单的选中项的值 var cc3 = $('.formc select[@name="country"]').attr("id"); //得到下拉菜单的选中项的ID属性值 $("#select").empty();//清空下拉框//$("#select").html(''); $("<option value='1'>1111</option>").appendTo("#select")//添加下拉框的option
A little explanation:
1.select[@name='country'] option[@selected] means the option element with the selected attribute in the select element that has the name attribute,
and the attribute value is 'country' ;
It can be seen that anything starting with @ means that it is followed by attributes.
2, Radio button:
$("input[@type=radio][@checked]").val(); //Get the value of the selected item of the radio button (note the middle No spaces)
$("input[@type=radio][@value=2]").attr("checked",'checked'); //Set the radio button value=2 to the selected state. (Note that there are no spaces in the middle)
3,Check box:
$("input[@type=checkbox][@checked]").val(); // Get the value of the first selected item of the check box
$("input[@type=checkbox][@checked]").each(function(){ //Because check boxes generally select multiple , so you can loop the output
alert($(this).val());
});
$("#chk1").attr("checked",''); //Uncheck
$("#chk2").attr("checked",true);//Check
if($("#chk1").attr('checked')== undefined){} //Judge whether it has been checked
Of course jquery's selector is powerful. There are many 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> <!--下拉框--> <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取值,checkbox取值,select取值,radio选中,checkbox选中,select选中,及其相关获取一组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();
select下拉框的第二个元素为当前选中值
$('#select_id')[0].selectedIndex = 1;
radio单选组的第二个元素为当前选中值
$('input[@name=items]').get(1).checked = true;
获取值:
文本框,文本区域:$("#txt").attr("value");
多选框checkbox:$("#checkbox_id").attr("value");
单选组radio: $("input[@type=radio][@checked]").val();
下拉框select: $('#sel').val();
控制表单元素:
文本框,文本区域:$("#txt").attr("value",'');//清空内容
$("#txt").attr("value",'11');//填充内容
多选框checkbox: $("#chk1").attr("checked",'');//不打勾
$("#chk2").attr("checked",true);//打勾
if($("#chk1").attr('checked')==undefined) //判断是否已经打勾
单选组radio: $("input[@type=radio]").attr("checked",'2');//设置value=2的项目为当前选中项
下拉框select: $("#sel").attr("value",'-sel3');//设置value=-sel3的项目为当前选中项
$("5f82d81061bb5b0e81dd28a03a1b9e8711114afa15d3069109ac30911f04c56f3338ffde645126e3a5d22e0fa10419cb8e14 22224afa15d3069109ac30911f04c56f3338").appendTo("#sel")//添加下拉框的option
$("#sel").empty();//清空下拉框
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();
select下拉框的第二个元素为当前选中值
$('#select_id')[0].selectedIndex = 1;
radio单选组的第二个元素为当前选中值
$('input[@name=items]').get(1).checked = true;
获取值:
文本框,文本区域:$("#txt").attr("value");
多选框checkbox:$("#checkbox_id").attr("value");
单选组radio: $("input[@type=radio][@checked]").val();
下拉框select: $('#sel').val();
控制表单元素:
文本框,文本区域:$("#txt").attr("value",'');//清空内容
$("#txt").attr("value",'11');//填充内容
多选框checkbox: $("#chk1").attr("checked",'');//不打勾
$("#chk2").attr("checked",true);//打勾
if($("#chk1").attr('checked')==undefined) //判断是否已经打勾
单选组radio: $("input[@type=radio]").attr("checked",'2');//设置value=2的项目为当前选中项
下拉框select: $("#sel").attr("value",'-sel3');//设置value=-sel3的项目为当前选中项
$("46508805598f6c40e24d4c0fe896e9ca11114afa15d3069109ac30911f04c56f33386dbb54790dcf012238851e6699b7626822224afa15d3069109ac30911f04c56f3338").appendTo("#sel")//添加下拉框的option
$("#sel").empty();//清空下拉框
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