JQuery selects the selected value method of the select component-JS Tutorial-php.cn

Below I will share with you an article about the value method of selecting the selected component in JQuery. It has a good reference value and I hope it will be helpful to everyone.

jquery gets the text and value selected by select

Get select:

Get the selected text of select:

$(“#ddlregtype”).find(“option:selected”).text();

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Get the selected value of select:

$(“#ddlregtype “).val();

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Get the selected index of select:

$(“#ddlregtype “).get(0).selectedindex;

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Set select ：

Set select selected index:

$(“#ddlregtype “).get(0).selectedindex=index;//index为索引值

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Set select selected value:

(“#ddlregtype “).attr(“value”,”normal“);(“#ddlregtype “).attr(“value”,”normal“);(“#ddlregtype “).val(“normal”); $(“#ddlregtype “).get(0).value = value;

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Set select selected text :

var count=$("#ddlregtype option").length; for(var i=0;i
        
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Set the select option item:

$("#select_id").append(""); //添加一项option $("#select_id").prepend(""); //在前面插入一项option $("#select_id option:last").remove(); //删除索引值最大的option $("#select_id option[index='0']").remove();//删除索引值为0的option $("#select_id option[value='3']").remove(); //删除值为3的option $("#select_id option[text='4']").remove(); //删除text值为4的option

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Clear the select:

$("#ddlregtype ").empty();

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Work needs to get the values in the two forms. As shown in the picture:

How to get the value added from the left selection box to the right selection box? I thought about using web page special effects to get it, and the more popular jquery was used here.

js code is as follows:

//获取所有属性值 var item = $("#select1").val(); $(function(){ $('#select1').each( //获得select1的所有值 function(){ $('button').click(function(){ alert($('#select2').val()); //获得select2中的select1值 }); }); })

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It is worth noting that it cannot be written directly as

$(function(){ $('#select2').each( //获得select1的所有值，因为前面讲选项从左边添加到右边，jquery其实并没有真正将值从左边传到右边。 function(){ $('button').click(function(){ alert($(this).val()); //获得select2中的select1值 }); }); })

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html:

Option 1
Option 2
Option 3
Option 4
Option 5
Option 6
Option 7

Select to add to the right>>
Add all to the right>>

Use JQuery and Ajax to call the option of dynamically filling the Select Options

//绑定ClassLevel1单击事件 $("#ClassLevel1").change(function () { var id = $("#ClassLevel1").val(); var level2 = $("#ClassLevel2"); level2.empty(); $("#ClassLevel3").hide(); $.ajax({ url: "./askCommon.ashx?action=getclasslevel&pid=" + id, data: { "type": "ajax" }, datatype: "json", type: "get", success: function (data) { var json = eval_r(data); for (var ind in json) { level2.append($("")); } } }); })

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The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

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