js 아래 레이어를 사용하여 select_form 특수 효과의 제목 프롬프트 속성을 구현합니다.-JS 튜토리얼-php.cn

코드 복사 코드는 다음과 같습니다.

<스크립트>
             기능 opts(selectObj){
                       var optDivs=document.createElement("div");
                        var objTable=document.createElement("table");
                        var objTbody=document.createElement("tbody");
                        optDivs.style.zIndex = "100";
                        objTable.style.zIndex = "100";
                        objTable.width=selectObj.style.width;
                        objTable.border = "0";
                        objTable.cellPadding = "0";
                        objTable.cellSpacing = "0";
                        objTable.style.paddingLeft = "2";
                       objTable.style.fontFamily = "Verdana, Arial, Helvetica, sans-serif";

                        var e = selectObj;
                        var absTop = e.offsetTop;
                        var absLeft = e.offsetLeft;
                        var absWidth = e.offsetWidth;
                        var absHeight = e.offsetHeight;

                        while(e = e.offsetParent){
                       absTop = (e.offsetTop 0.3);
                        absLeft = e.offsetLeft;
                        }

                        with (objTable.style){
                      위치 = "절대";
                        top = (absTop absHeight) "px";
                        왼쪽 = (absLeft 1) "px";
                        테두리 = "1px 단색 검정색";
                        tableLayout="fixed";
                        wordBreak="break-all";
                       }

                      var options = selectObj.options;
                        var val=selectObj.value;

                          if (options.length > 0){
                           for (var i = 0; i < options.length; i ){
                                    var newOptDiv = document.createElement("td") ;
                                   var objRow=document.createElement("tr");
                            newOptDiv.name=options[i].value;
                            newOptDiv.innerText=options[i].innerText;
                            newOptDiv.title=options[i].title;
                           newOptDiv.onmouseout = function() {this.className='smouseOut';val=selectObj.value};
                           newOptDiv.onmouseover = function() {this.className='smouseOver';val=this.name;};
                            newOptDiv.className="smouseOut";
                            newOptDiv.style.width=40;
                            newOptDiv.style.cursor="default";
                            newOptDiv.style.fontSize = "11px";
                           newOptDiv.style.fontFamily = "Verdana, Arial, Helvetica, sans-serif";

                           objRow.appendChild(newOptDiv);
                            objTbody.appendChild(objRow);
                          }
                        }


                           objTbody.appendChild(objRow);
                           objTable.appendChild(objTbody);
                           optDivs.appendChild(objTable);
                           document.body.appendChild(optDivs);

                            var IfrRef = document.createElement("div");
                           IfrRef.style.position="absolute";
                           IfrRef.style.width = objTable.offsetWidth;
                           IfrRef.style.height = objTable.offsetHeight;
                           IfrRef.style.top = objTable.style.top;
                           IfrRef.style.left = objTable.style.left;
                           IfrRef.style.BackgroundColor = document.bgColor;
                           document.body.appendChild(IfrRef);

                           objTable.focus();
                          objTable.onblur=function() {choose(selectObj,val,optDivs,IfrRef)};
         }

         기능 선택(objselect,val,delobj,delobj2){
             objselect.value=val;
             document.body.removeChild(delobj);
             document.body.removeChild(delobj2);
         }