我怎样才能显示对JavaScript或Ajax的下拉每个选项的工具提示？
这是很容易与后面的代码来展示，但这种提示是不一样快用JavaScript创建一个提示。
Answer 1:
您可以通过代码添加此背后做这样的事情用JavaScript的帮助：
DropDown1.Attributes.Add("onmouseover",
"this.title=this.options[this.selectedIndex].title");
要么
<select name="DropDownList1" id="DropDownList1"
onmouseover="this.title=this.options[this.selectedIndex].title">
<option value="1" title="asd">asd</option>
<option value="2" title="zxc">zxc</option>
<option value="3" title="qwe">qwe</option>
</select>
Answer 2:
use this :
<select name="ddlCity" id="ddlCity"
onmouseover="this.title=this.options[this.selectedIndex].title">
<option value="Delhi" title="Delhi">Delhi</option>
<option value="mumbai" title="mumbai">mumbai</option>
<option value="Chennai" title="Chennai">Chennai</option>
<option value="kolkata" title="mumbai">mumbai</option>
</select>
文章来源: How can I show a tooltip for each option on a dropdown with JavaScript or Ajax?
