利用javaScript实现点击输入框弹出窗体选择信息_javascript技巧

 //数组信息
 var arrs = new Array();
 arrs.push({id:"1", name:"张三3"});
 arrs.push({id:"2", name:"李四3"});
 arrs.push({id:"3", name:"申午武3"});
 arrs.push({id:"4", name:"周琬淞3"});
 arrs.push({id:"5", name:"覃晓为3"});
 arrs.push({id:"6", name:"王五"});
 arrs.push({id:"7", name:"宝典3"});

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/**
 * obj: 点击文本框的对象
 * idStr: json数组的id键名
 * nameStr: json数组的name键名
 * bool:  true:表示追加 false:表示重新赋值
 * boolSet: true:ID和Name的值都显示 false:只显示Name的值
 * widthNum: 信息DIV的宽度
 * heightNum: 信息DIV的高度
 * arrName: 数组名称
 */
function alertDivINFO(obj, idStr, nameStr, bool, boolSet, widthNum, heightNum, arrName){
 obj.blur();
 if(!widthNum){
  widthNum = 600;
 }
 if(!heightNum){
  heightNum = 350;
 }
 //创建大的DIV
 var alertDivParent = document.createElement("div");
 alertDivParent.id = "alertDivParent";
 with(alertDivParent.style){
  top = 0;
  left = 0;
  position = "absolute";
  background = "#EEEEEE";
  filter  = "alpha(opacity=70)";
  opacity = 0.7;
  width  = Math.max(document.body.clientWidth, document.body.scrollWidth);
  height  = Math.max(document.body.clientHeight, document.body.scrollHeight);
 }
 document.body.appendChild(alertDivParent);
 //创建小的DIV
 var alertDiv = document.createElement("div");
 alertDiv.id = "alertDiv";
 with(alertDiv.style){
  width = widthNum;
  height = heightNum;
  position = "absolute";
  background = "#DDDDDD";
  left  = (Math.max(document.body.clientWidth, document.body.scrollWidth) - widthNum) / 2;
  top  = (Math.max(document.body.clientHeight, document.body.scrollHeight) - heightNum) / 2;
 }
 //添加到窗体
 document.body.appendChild(alertDiv);

 //创建搜索的DIV
 var alertQueryDiv = document.createElement("div");
 alertQueryDiv.id = "alertQueryDiv";
 //将搜索的DIV添加到信息DIV
    alertDiv.appendChild(alertQueryDiv);

    alertQueryDiv.innerHTML = "搜索   名称：";

    //创建文本框
    var alertQueryINPUT = document.createElement("input");
    alertQueryINPUT.id = "alertQueryINPUT";
    alertQueryINPUT.type = "text";
    //将文本框添加到搜索的DIV
    alertQueryDiv.appendChild(alertQueryINPUT);

    //创建搜索按钮
    var alertQueryBUTTON = document.createElement("input");
 alertQueryBUTTON.id = "alertQueryBUTTON";
    alertQueryBUTTON.type = "button";
    alertQueryBUTTON.value = " 搜 索 ";
    //给按钮添加事件
    alertQueryBUTTON.onclick = function(){
  //计算该宽度可放多少单元格
  var tdWidthNum = 130;
  var tdNum = parseInt(widthNum / tdWidthNum);
     var num = 0;
     var j = 0;
     //获取显示信息的Table
  var alertInfoTab = document.getElementById("alertInfoTab");
  //清空THead的信息
  alertInfoTab.deleteTHead();
     //循环数组
  for(var i = 0; i    //如果与数组中的相等就添加到TABLE
      if(eval(arrName + "[i]." + nameStr).indexOf(alertQueryINPUT.value) >= 0){
    var header;
    if(j % tdNum == 0){
     header = alertInfoTab.createTHead();
     header = header.insertRow(num);
     num ++;
    }
    j ++;
    var headerName = header.insertCell(-1);
    with(headerName.style){
     width = tdWidthNum;
     color = "blue";
     cursor = "pointer";
    }
    if(boolSet)
     headerName.appendChild(document.createTextNode(eval(arrName + "[i]." + idStr) + ": " + eval(arrName + "[i]." + nameStr)));
    else if(!boolSet)
     headerName.appendChild(document.createTextNode(eval(arrName + "[i]." + nameStr)));
    headerName.onclick = function(){
     if(bool)
      obj.value = obj.value + this.innerHTML + ";";
     else if(!bool)
      obj.value = this.innerHTML;
     //移除弹出的窗体
     document.body.removeChild(alertDiv);
     document.body.removeChild(alertDivParent);
    };
   }
     }
    };
    //将按钮添加到搜索的DIV
    alertQueryDiv.appendChild(alertQueryBUTTON);

    //创建清空按钮
    var alertClearBUTTON = document.createElement("input");
 alertClearBUTTON.id = "alertClearBUTTON";
    alertClearBUTTON.type = "button";
    alertClearBUTTON.value = " 清 空 ";
    alertClearBUTTON.onclick = function(){
     //给文本框赋空值
     obj.value = "";
  //移除弹出的窗体
  document.body.removeChild(alertDiv);
  document.body.removeChild(alertDivParent);
    };
    //将按钮添加到搜索的DIV
    alertQueryDiv.appendChild(alertClearBUTTON);

    //创建关闭按钮
    var alertCancelBUTTON = document.createElement("input");
 alertCancelBUTTON.id = "alertCancelBUTTON";
    alertCancelBUTTON.type = "button";
    alertCancelBUTTON.value = " 关 闭 ";
    alertCancelBUTTON.onclick = function(){
  //移除弹出的窗体
  document.body.removeChild(alertDiv);
  document.body.removeChild(alertDivParent);
    };
    //将按钮添加到搜索的DIV
    alertQueryDiv.appendChild(alertCancelBUTTON);

 //创建显示信息的Table
 var alertInfoTab = document.createElement("table");
 alertInfoTab.id = "alertInfoTab";
 with(alertInfoTab.style){
  margin = 20;
 }

 //计算该宽度可放多少单元格
 var tdWidthNum = 130;
 var tdNum = parseInt(widthNum / tdWidthNum);
    var num = 0;
 for(var i = 0; i   var header;
  if(i % tdNum == 0){
   header = alertInfoTab.createTHead();
   header = header.insertRow(num);
   num ++;
  }
  var headerName = header.insertCell(-1);
  with(headerName.style){
   width = tdWidthNum;
   color = "blue";
   cursor = "pointer";
  }
  //var headerType = header.insertCell(-1);
  if(boolSet)
   headerName.appendChild(document.createTextNode(eval(arrName + "[i]." + idStr) + ": " + eval(arrName + "[i]." + nameStr)));
  else if(!boolSet)
   headerName.appendChild(document.createTextNode(eval(arrName + "[i]." + nameStr)));
  //headerType.appendChild(document.createTextNode("Type"));

  headerName.onclick = function(){
   if(bool)
    obj.value = obj.value + this.innerHTML + ";";
   else if(!bool)
    obj.value = this.innerHTML;
   //移除弹出的窗体
   document.body.removeChild(alertDiv);
   document.body.removeChild(alertDivParent);
  };
 }
 //将table添加到显示信息的DIV
    alertDiv.appendChild(alertInfoTab);
}