普通的选择元素不能用用户样式调整(不包括背景,触发按钮和宽度),因此我使用了一个模拟器,它从DOM中删除了select元素并用<ul> <li>
替换它包含选项值和一个显示所选值的隐藏输入。我知道,如何在正常选择中自动提交,但不知道如何让这个模拟器以这种方式工作。
在下面的代码中,如何在用户选择列表中的项目时自动提交?
function tamingselect()
{
if(!document.getElementById && !document.createTextNode){return;}
// Classes for the link and the visible dropdown
var ts_selectclass='turnintodropdown'; // class to identify selects
var ts_listclass='turnintoselect'; // class to identify ULs
var ts_boxclass='dropcontainer'; // parent element
var ts_triggeron='activetrigger'; // class for the active trigger link
var ts_triggeroff='trigger'; // class for the inactive trigger link
var ts_dropdownclosed='dropdownhidden'; // closed dropdown
var ts_dropdownopen='dropdownvisible'; // open dropdown
/*
Turn all selects into DOM dropdowns
*/
var count=0;
var toreplace=new Array();
var sels=document.getElementsByTagName('select');
for(var i=0;i<sels.length;i++){
if (ts_check(sels[i],ts_selectclass))
{
var hiddenfield=document.createElement('input');
hiddenfield.name=sels[i].name;
hiddenfield.type='hidden';
hiddenfield.id=sels[i].id;
hiddenfield.value=sels[i].options[0].value;
sels[i].parentNode.insertBefore(hiddenfield,sels[i])
var trigger=document.createElement('a');
ts_addclass(trigger,ts_triggeroff);
trigger.href='#';
trigger.onclick=function(){
ts_swapclass(this,ts_triggeroff,ts_triggeron)
ts_swapclass(this.parentNode.getElementsByTagName('ul')
[0],ts_dropdownclosed,ts_dropdownopen);
return false;
}
trigger.appendChild(document.createTextNode(sels[i].options[0].text));
sels[i].parentNode.insertBefore(trigger,sels[i]);
var replaceUL=document.createElement('ul');
for(var j=0;j<sels[i].getElementsByTagName('option').length;j++)
{
var newli=document.createElement('li');
var newa=document.createElement('a');
newli.v=sels[i].getElementsByTagName('option')[j].value;
newli.elm=hiddenfield;
newli.istrigger=trigger;
newa.href='#';
newa.appendChild(document.createTextNode(
sels[i].getElementsByTagName('option')[j].text));
newli.onclick=function(){
this.elm.value=this.v;
ts_swapclass(this.istrigger,ts_triggeron,ts_triggeroff);
ts_swapclass(this.parentNode,ts_dropdownopen,ts_dropdownclosed)
this.istrigger.firstChild.nodeValue=this.firstChild.firstChild.nodeValue;
return false;
}
newli.appendChild(newa);
replaceUL.appendChild(newli);
}
ts_addclass(replaceUL,ts_dropdownclosed);
var div=document.createElement('div');
div.appendChild(replaceUL);
ts_addclass(div,ts_boxclass);
sels[i].parentNode.insertBefore(div,sels[i])
toreplace[count]=sels[i];
count++;
}
}
/*
Turn all ULs with the class defined above into dropdown navigations
*/
var uls=document.getElementsByTagName('ul');
for(var i=0;i<uls.length;i++)
{
if(ts_check(uls[i],ts_listclass))
{
var newform=document.createElement('form');
var newselect=document.createElement('select');
for(j=0;j<uls[i].getElementsByTagName('a').length;j++)
{
var newopt=document.createElement('option');
newopt.value=uls[i].getElementsByTagName('a')[j].href;
newopt.appendChild(document.createTextNode(uls[i].getElementsByTagName('a')[j].innerHTML));
newselect.appendChild(newopt);
}
newselect.onchange=function()
{
window.location=this.options[this.selectedIndex].value;
document.myForm.submit();
}
newform.appendChild(newselect);
uls[i].parentNode.insertBefore(newform,uls[i]);
toreplace[count]=uls[i];
count++;
}
}
for(i=0;i<count;i++){
toreplace[i].parentNode.removeChild(toreplace[i]);
}
function ts_check(o,c)
{
return new RegExp('\\b'+c+'\\b').test(o.className);
}
function ts_swapclass(o,c1,c2)
{
var cn=o.className
o.className=!ts_check(o,c1)?cn.replace(c2,c1):cn.replace(c1,c2);
}
function ts_addclass(o,c)
{
if(!ts_check(o,c)){o.className+=o.className==''?c:' '+c;}
}
}
window.onload=function()
{
tamingselect();
// add more functions if necessary
}
&#13;
<select class="turnintodropdown">
<option>opt 1
<option>opt 2
</select>
&#13;
答案 0 :(得分:0)
我找到了解决方案。只包含一个输入类型=&#34;提交&#34;在每一个
<li>
代替<a>
。
这一部分:
var newli=document.createElement('li');
var newa=document.createElement('a');
newli.v=sels[i].getElementsByTagName('option')[j].value;
newli.elm=hiddenfield;
newli.istrigger=trigger;
newa.href='#';
newa.appendChild(document.createTextNode(
sels[i].getElementsByTagName('option')[j].text));
newli.onclick=function(){
this.elm.value=this.v;
ts_swapclass(this.istrigger,ts_triggeron,ts_triggeroff);
ts_swapclass(this.parentNode,ts_dropdownopen,ts_dropdownclosed)
this.istrigger.firstChild.nodeValue=this.firstChild.firstChild.nodeValue;
return false;
}
newli.appendChild(newa);
replaceUL.appendChild(newli);
改为:
var newli=document.createElement('li');
var newsubm=document.createElement('input');
newsubm.type='submit';
newsubm.className='list-item'
var newa=document.createElement('a');
newli.v=sels[i].getElementsByTagName('option')[j].value;
newli.elm=hiddenfield;
newli.istrigger=trigger;
newa.href='#';
newa.appendChild(document.createTextNode(
sels[i].getElementsByTagName('option')[j].text));
newsubm.value=sels[i].getElementsByTagName('option')[j].text;
newli.onclick=function(){
this.elm.value=this.v;
ts_swapclass(this.istrigger,ts_triggeron,ts_triggeroff);
ts_swapclass(this.parentNode,ts_dropdownopen,ts_dropdownclosed)
this.istrigger.firstChild.nodeValue=this.firstChild.firstChild.nodeValue;
return false;
}
newli.appendChild(newsubm);
replaceUL.appendChild(newli);
我不知道,如果它是对的,但它适用于我的情况。最后我得到了一个按钮列表,但按钮可以很容易地调整样式。