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Javascript 中的 js select多选列表传值代码


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select多选列表传值,主要是读取选中的值,然后传递到对面的select中,每个功能都是独立的代码。

[Ctrl+A 全选 提示:你可先修改部分代码,再按运行]

js核心代码
复制代码 代码如下:

/*移除左边选中的列表项到右边*/
function fMoveSelectedOptionsLeftToRight(oLeft,oRight)
{
if(!(oLeft&&oRight))
{
return;
}
if(!hasOptions(oLeft))
{
return;
}
if(oLeft.selectedIndex==-1)
{
oLeft.selectedIndex=0;
}
for(var i=0;i<oLeft.options.length;i++)
{
if(oLeft.options[i].selected)
{
var oOption = document.createElement("OPTION");
oOption.setAttribute("text",oLeft.options[i].text);
oOption.setAttribute("value",oLeft.options[i].value);
oRight.add(oOption);
}
}
clearSelectedOptions(oLeft);
}
/*移除左边的所有列表项到右边*/
function fMoveAllOptionsLeftToRight(oLeft,oRight)
{
if(!(oLeft&&oRight))
{
return;
}
if(!hasOptions(oLeft))
{
return;
}
for(var i=0;i<oLeft.options.length;i++)
{
var oOption = document.createElement("OPTION");
oOption.setAttribute("text",oLeft.options[i].text);
oOption.setAttribute("value",oLeft.options[i].value);
oRight.add(oOption);
}
clearAllOptions(oLeft);
}
/*移除右边选中的列表项到左边*/
function fMoveSelectedOptionsRightToLeft(oLeft,oRight)
{
if(!(oLeft&&oRight))
{
return;
}
if(!hasOptions(oRight))
{
return;
}
if(oRight.selectedIndex==-1)
{
oRight.selectedIndex=0;
}
for(var i=0;i<oRight.options.length;i++)
{
if(oRight.options[i].selected)
{
var oOption = document.createElement("OPTION");
oOption.setAttribute("text",oRight.options[i].text);
oOption.setAttribute("value",oRight.options[i].value);
oLeft.add(oOption);
}
}
clearSelectedOptions(oRight);
}
/*移除右边的所有列表项到左边*/
function fMoveAllOptionsRightToLeft(oLeft,oRight)
{
if(!(oLeft&&oRight))
{
return;
}
if(!hasOptions(oRight))
{
return;
}
for(var i=0;i<oRight.options.length;i++)
{
var oOption = document.createElement("OPTION");
oOption.setAttribute("text",oRight.options[i].text);
oOption.setAttribute("value",oRight.options[i].value);
oLeft.add(oOption);
}
clearAllOptions(oRight);
}
/*清空select所有options*/
function clearAllOptions(oSelect)
{
if(oSelect)
{
var ops=oSelect.options;
while(ops.length>0)
{
oSelect.remove(ops.length-1);
}
}
}
/*清空select所有选中的options*/
function clearSelectedOptions(oSelect)
{
if(oSelect)
{
for(var i=0;i<oSelect.options.length;i++)
{
if(oSelect.options[i].selected)
{
oSelect.remove(i--);
}
}
}
}
/*判断select是否有options*/
function hasOptions(oSelect)
{
if(oSelect)
{
return oSelect.options.length>0;
}
return false;
}