您好我正在尝试使用HTML <div>
来更改其边框颜色,当我选择其中一个下拉框时。
我尝试了一些简单的事情:
<style>
#select_Academic:hover{border:1px solid red;}
#select_Academic:focus{border:1px solid red;}
#select_Academic:active{border:1px solid red;}
</style>
html是:
echo "<div id=\"Options\">";
include "select.class.php";
echo "<form id=\"select_Academic\">";
echo "<div class=\"Select_Option\">";
echo "Choose a subject:";
echo "</div>";
echo "<select style=\"width:200px; margin-left:10px;\" id=\"category\" name=\"cat\" >";
echo $opt->ShowCategory();
echo "</select>";
echo "<br />";
echo "<br />";
echo "<div class=\"Select_Option\">";
echo "Choose a section:";
echo "</div>";
echo "<select style=\"width:200px; margin-left:10px;\"id=\"type\">";
echo "<option value=\"%\">";
echo "Section";
echo "</option>";
echo "</select>";
echo "<br />";
echo "<br />";
echo "<div class=\"Select_Option\">";
echo "Choose a principle:";
echo "</div>";
echo "<select style=\"width:200px; margin-left:10px;\"id=\"principle\">";
echo "<option value=\"%\">";
echo "Principle";
echo "</option>";
echo "</select>";
echo "<br />";
echo "<br />";
echo "<input style=\"margin-left:10px;\" type=\"submit\" value=\"Search\"/>";
echo "</form>";
echo "</div>";
但是当鼠标离开div时,边框颜色不再显示,我理解为什么只是想知道最好的方法是什么。
我有JavaScript链接到这些框我不知道你是否可以在这个JavaScript中添加一些东西以获得相同的结果。
我得到的JavaScript:
$(document).ready(function()
{
$("select#type").attr("disabled","disabled");
$("select#category").change(function()
{
var id = $("select#category option:selected").attr('value');
$("select#type").attr("disabled","disabled");
$("select#type").html("<option>wait...</option>");
$.post("select_type.php", {id:id}, function(data)
{
$("select#type").removeAttr("disabled");
$("select#type").html(data);
});
});
$("select#principle").attr("disabled","disabled");
$("select#type").change(function(){
var id = $("select#type option:selected").attr('value');
$("select#principle").attr("disabled","disabled");
$("select#principle").html("<option>wait...</option>");
$.post("select_principle.php", {id:id}, function(data){
$("select#principle").removeAttr("disabled");
$("select#principle").html(data);
});
});
$("select#career").attr("disabled","disabled");
$("select#jobrole").change(function(){
var id = $("select#jobrole option:selected").attr('value');
$("select#career").attr("disabled","disabled");
$("select#career").html("<option>wait...</option>");
$.post("select_career.php", {id:id}, function(data){
$("select#career").removeAttr("disabled");
$("select#career").html(data);
});
});
$("form#select_Academic").submit(function()
{
var cat = $("select#category option:selected").attr('value');
var type = $("select#type option:selected").attr('value');
var princ = $("select#principle option:selected").attr('value');
$txt = cat + "#" + type + "#" + princ;
var id = $("select#type option:selected").attr('value');
$.post("get_results.php", {comboboxselections:$txt}, function(data){
$("#ResultList").html(''+data);
});
if(cat>0 && type>0 && princ>0)
{
}
else
{
$("#ResultList").html("you must choose three options!");
}
return false;
});
$("form#Select_Job").submit(function()
{
var job = $("select#jobrole option:selected").attr('value');
var car = $("select#career option:selected").attr('value');
$txt1 = job + "#" + car;
var id = $("select#career option:selected").attr('value');
$.post("get_jobresults.php", {comboboxselections1:$txt1}, function(data){
$("#ResultList").html(''+data);
});
if(job>0 && car>0)
{
}
else
{
$("#ResultList").html("you must choose two options!");
}
return false;
});
});
</script>
任何帮助都将非常感谢我对所有建议开放,例如jquery
答案 0 :(得分:0)
您需要处理下拉列表的change
事件,并在事件处理程序中根据所选值应用CSS类。这是一个带有示例的JSFiddle:http://jsfiddle.net/6AUg2/2/