我想学习如何使用JavaScript(或jQuery库)来转到在optgroup标签内指示为option标签值的url。
使用包含选项标签的简单一级选择标记,解决方案可以类似于in this post所述的解决方案:
<FORM NAME="nav"><DIV>
<SELECT NAME="SelectURL" onChange=
"document.location.href=
document.nav.SelectURL.options[document.nav.SelectURL.selectedIndex].value">
<OPTION VALUE="http://www.cs.tut.fi/~jkorpela/forms/jsnav.html"
SELECTED>Please select an item:
<OPTION VALUE="http://www.cs.tut.fi/~jkorpela/forms/">
Main page on HTML forms
<OPTION VALUE="http://www.cs.tut.fi/~jkorpela/forms/choices.html">
Choices in HTML forms
<OPTION VALUE="http://www.cs.tut.fi/~jkorpela/forms/tables.html">
Tables and forms
<OPTION VALUE="http://www.cs.tut.fi/~jkorpela/forms/methods.html">
Form submission methods (GET and POST)
</SELECT><DIV>
</FORM>
我尝试将它与带有选项标签的两级选择标签一起使用 - 这对我来说不起作用。我很感激能帮助您调整此代码。
答案 0 :(得分:2)
当用户选择一个选项时,使用此选项:
$('select[name="SelectURL"]').change(function() {
window.location.replace($(this).val());
});
或者当用户点击提交按钮时:
$('form[name="nag"]').on('submit' function(e){
e.preventDefault();
window.location.replace($('select[name="SelectURL"]').val());
});
您还应该像这样清理HTML:
<FORM NAME="nav">
<DIV>
<SELECT NAME="SelectURL">
<OPTION VALUE="http://www.cs.tut.fi/~jkorpela/forms/jsnav.html" SELECTED>Please select an item:</OPTION>
<OPTION VALUE="http://www.cs.tut.fi/~jkorpela/forms/"> Main page on HTML forms</OPTION>
<OPTION VALUE="http://www.cs.tut.fi/~jkorpela/forms/choices.html"> Choices in HTML forms</OPTION>
<OPTION VALUE="http://www.cs.tut.fi/~jkorpela/forms/tables.html"> Tables and forms</OPTION>
<OPTION VALUE="http://www.cs.tut.fi/~jkorpela/forms/methods.html"> Form submission methods (GET and POST)</OPTION>
</SELECT>
<DIV>
</FORM>
答案 1 :(得分:0)
首先摆脱内联onChange事件处理程序:
<FORM NAME="nav"><DIV>
<SELECT NAME="SelectURL">
<OPTION VALUE="http://www.cs.tut.fi/~jkorpela/forms/jsnav.html"
SELECTED>Please select an item:
<OPTION VALUE="http://www.cs.tut.fi/~jkorpela/forms/">
Main page on HTML forms
<OPTION VALUE="http://www.cs.tut.fi/~jkorpela/forms/choices.html">
Choices in HTML forms
<OPTION VALUE="http://www.cs.tut.fi/~jkorpela/forms/tables.html">
Tables and forms
<OPTION VALUE="http://www.cs.tut.fi/~jkorpela/forms/methods.html">
Form submission methods (GET and POST)
</SELECT><DIV>
</FORM>
然后只需添加一个事件监听器:
$(document).ready(function()
{
$('select[name=SelectURL]').change(function(v)
{
window.location.replace( $(this).val() );
});
});