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  • 转帖 javascript操作listbox方法

    function SelectAll()
            {
                var lst1=window.document.getElementById("SourceListBox");
                var length = lst1.options.length;
                for(var i=0;i<length;i++)
                {
                    var v = lst1.options[i].value;
                    var t = lst1.options[i].text;
                    var lst2=window.document.getElementById("DestinationListBox");
                    lst2.options[i] = new Option(t,v,true,true);   
                }
               
            }
           
            function DelAll()
            {
                var lst2=window.document.getElementById("DestinationListBox");
                var length = lst2.options.length;
                for(var i=length;i>0;i--)
                {
                    lst2.options[i-1].parentNode.removeChild(lst2.options[i-1]);
                }   
            }
           
            function SelectOne()
            {
                var lst1=window.document.getElementById("SourceListBox");
                var lstindex=lst1.selectedIndex;
                if(lstindex<0)
                    return;
                var v = lst1.options[lstindex].value;
                var t = lst1.options[lstindex].text;
                var lst2=window.document.getElementById("DestinationListBox");
                lst2.options[lst2.options.length] = new Option(t,v,true,true);   
                   
            }
           
            function DelOne()
            {
                var lst2=window.document.getElementById("DestinationListBox");
                var lstindex=lst2.selectedIndex;
                if(lstindex>=0)
                {
                    var v = lst2.options[lstindex].value+";";
                    lst2.options[lstindex].parentNode.removeChild(lst2.options[lstindex]);
                }
                   
            }

     

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  • 原文地址:https://www.cnblogs.com/umlzhang/p/1958863.html
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