如何通过Java脚本在下拉列表中获取选定的项目文本 [英] how to get selected item text in dropdownlist through java script

问题描述

<选择id ="ddlViewBy">
< option value ="1"> test1</option>
< option value =父亲"> A</option>
< option value ="Son"> B</option>
< option value ="Son"> C/option>
</select>


如何通过诸如((DropDownList)plc1.FindControl(CtrID)).SelectedItem.Text
的Java脚本获取"test3"
谢谢

<select id="ddlViewBy">
<option value="1">test1</option>
<option value="Father" >A</option>
<option value="Son">B</option>
<option value="Son">C/option>
</select>


how to get "test3" through java script like ((DropDownList)plc1.FindControl(CtrID)).SelectedItem.Text

Thanks

推荐答案

您可以使用

You can use

var e = document.getElementById("ddlViewBy");
var value = e.options[e.selectedIndex].value;
var text = e.options[e.selectedIndex].text;

JavaScript:

var t = document.getElementById("ddlViewBy");<br />
var selectedText = t.options[t.selectedIndex].text;

jQuery:
已优化:

jQuery:
Optimized:

("#ddlViewBy option").is("selected").text();
最快:

("#ddlViewBy option").is("selected").text();
Fastest:

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