1.项从RemoveListBox移动到AddListBox的方法 function change(RemoveListBox,AddListBox) { var lstDxxm=window.document.getElementById(RemoveListBox); var lstindex=lstDxxm.selectedIndex; if(lstindex<0) return; var t = lstDxxm.options[lstindex].text; var v = lstDxxm.options[lstindex].value; var lstYxxm=window.document.getElementById(AddListBox); lstYxxm.options[lstYxxm.options.length] = new Option(t,v,true,true); lstDxxm.remove(lstindex); } 2.清空ListBox所有项的方法 document.getElementById("ListBox1").length = 0;