亲宝软件园·资讯

展开

可输入文字查找ajax下拉框控件 ComBox的实现方法

人气:0

GooFunc.js文件

//获取一个DIV的绝对坐标的功能函数,即使是非绝对定位,一样能获取到
function getElCoordinate(dom) {
 var t = dom.offsetTop;
 var l = dom.offsetLeft;
 dom=dom.offsetParent;
 while (dom) {
  t += dom.offsetTop;
  l += dom.offsetLeft;
	dom=dom.offsetParent;
 }; return {
  top: t,
  left: l
 };
}
//兼容各种浏览器的,获取鼠标真实位置
function mousePosition(ev){
	if(!ev) ev=window.event;
  if(ev.pageX || ev.pageY){
    return {x:ev.pageX, y:ev.pageY};
  }
  return {
    x:ev.clientX + document.documentElement.scrollLeft - document.body.clientLeft,
    y:ev.clientY + document.documentElement.scrollTop - document.body.clientTop
  };
}
//给DATE类添加一个格式化输出字串的方法
Date.prototype.format = function(format)  
{  
  var o = {  
   "M+" : this.getMonth()+1, //month 
   "d+" : this.getDate(),  /https://img.qb5200.com/download-x/day 
   "h+" : this.getHours(),  //hour 
   "m+" : this.getMinutes(), //minute 
   "s+" : this.getSeconds(), //second ‘
	 //quarter 
   "q+" : Math.floor((this.getMonth()+3)/3), 
   "S" : this.getMilliseconds() //millisecond 
  }  
  if(/(y+)/.test(format)) format=format.replace(RegExp.$1,(this.getFullYear()+"").substr(4 - RegExp.$1.length));  
  for(var k in o)if(new RegExp("("+ k +")").test(format))  
   format = format.replace(RegExp.$1,  
    RegExp.$1.length==1 ? o[k] :  
     ("00"+ o[k]).substr((""+ o[k]).length));  
  return format;
}


<pre name="code" class="javascript"><pre name="code" class="javascript"><pre name="code" class="javascript"><pre name="code" class="javascript">GooCombo.JS文件</pre>
<pre></pre>
<pre></pre>
<pre></pre>
<pre name="code" class="javascript">/*下拉框定义--GooCombo类*/
/https://img.qb5200.com/download-x/dom :要被绑定的DOM对象,必须要有其ID或者NAME,且未被JQUERY对象化
//property :JSON变量,SLIDER的详细参数设置
//目前,构造函数可接受用普通DOM容器或者直接传送SELECT控件来进行渲染
function GooCombo(dom,property){
	this.$div=null;//渲染完毕后最父框架的DIV
	this.$id=null;//this.$div中SELECT控件的ID
	this.$name=null;//this.$div中SELECT控件的NAME
	this.$width = property.width; //下拉框控件的宽度,必填项
  
	this.$haveIcon=property.haveIcon||false;
	this.$input = $("<input type='text' value='" + property.text + "' " + (property.readOnly ? "readonly='readonly'" : "") + (this.$haveIcon ? " style='margin-left:20px;width:" + (this.$width - 39) + "px'" : "") + "/>"); //下拉框控件中始终显示的文本框INPUT
	this.$btn=$("<div class='btn_up'></div>");//下拉框右部的按钮
	this.$data=[];//下拉框控件的所有显示文字和值,二维数组
	this.$type="basic";//下拉框控件的运行模式,有basic基本,multiple可多选,filter过滤显示 三种,默认为basic
	this.$selectHeight=property.selectHeight||0;
	this.$list=$("<ul style='width:"+(this.$width-2)+"px;height:"+property.selectHeight+"px;'></ul>");//下拉框的列表JQUERY对象
	this.$lastSelect=null;//当前最近一次被选中的单元,在this.$type="multiple"时,它将不发挥其记录作用
	this.$select = null; //保存所选值的单元一般为select控件
	this.$autoLoad=false;//是否动设置为动态载入数据,既下拉动作触发时再载入数据,默认为FALSE()
	this.$alreadyLoad=false;//是否已经载入完了数据,默认为false
	//设置为动态自动获取数据(渲染后Combo中的input框被选中后载入数据)
	this.setAutoLoad=function(bool){
		this.$autoLoad=true;
	};
	if(property.autoLoad) this.setAutoLoad(property.autoLoad);
	this.$ajaxType=null;//,其变量为一个远程链接参数的JSON数组,格式例如:{url:"website/pp.php",type:"POST",para:(与JQUERY中的AJAX方法中传参DATA一样)}默认为空
	this.setAjaxType=function(json){
		this.$ajaxType.url=json.url;
		this.$ajaxType.type=json.type;
		this.$ajaxType.para=json.para;
		this.$ajaxType.dataType=json.dataType;
	};
if (property.ajaxType) this.setAjaxType(property.ajaxType);


	//开始构造函数主要内容
	if(dom!=null && dom.tagName=="SELECT"){
		var temp="";
		for(var i=0;i<dom.length;i++){
			this.$data[i]=[(dom.options[i].value||dom.options[i].text),dom.options[i].text,""];
			temp+="<a href='#'><p "+"value='"+this.$data[i][0]+"'>"+this.$data[i][1]+"</p></a>";
		}
		this.$list.append(temp);
		this.$id=dom.id;
		this.$name=dom.name;
		if(dom.multiple) this.$type="multiple";
		this.$select=$(dom);
		this.$select.wrap("<div class='Combo' id='Combo_"+this.$id+"'></div>")
		this.$div=this.$select.parent(".Combo");
	}
	else{
		this.$div=$(dom);
		this.$div.addClass("Combo");
		this.$select=$("<select></select>");
		this.$div.append(this.$select);
	}
	//this.$div.before(this.$septum);
	this.$div.css({width:this.$width+"px"});
	this.$div.append("<div class='text' style='width:"+(this.$width-19)+"px;'></div>").append(this.$btn).append(this.$list);
	this.$div.children("div:eq(0)").append("<div class='top_border'></div>").append(this.$input);
	
	//如果DOM为一个SELECT控件,则property中的属性还可以覆盖掉原来的ID,NAME ,type="multple"的默认设置
	//ID,NAME,TYPE如果在传入SELECT时就已经通过SELECT来定义,则PROPERTY中可以不用再写
	if(property.id)		{this.$id=property.id;this.$select.attr("id",property.id);}
	if(property.name)	{this.$name=property.name;this.$select.attr("name",property.name);}
	if(property.type){
		this.$type=property.type;
		if(property.type=="multiple") {this.$select.attr("size",1);this.$select.attr("multiple",property.type);}
		else	this.$select.removeAttr("multiple");
	}
	//载入一组数据的方法
	this.loadListData = function (data) {
	  this.$data = [];
	  if (this.$list.children("a").length > 0) {
	    this.$list.empty();
	    this.$select.empty();
	  }
	  temp = "", temp2 = "";
	  for (i = 0; i < data.length; ++i) {
	    this.$data[i] = [data[i][0], data[i][1], data[i][2] || ""];
	    if (this.$type== "filter")//在这里可以修改你想类型 basic 当鼠标点击进去是否展现初始数据
	      temp += "<a href='#'><p " + (this.$haveIcon ? "style='text-indent:19px;background:" + this.$data[i][2] + "' " : "") + "value='" + this.$data[i][0] + "'>" + this.$data[i][1] + "</p></a>";
	    temp2 += "<option value='" + this.$data[i][0] + "'>" + this.$data[i][1] + "</option>";
	  }
	  if (this.$type == "filter")
	  
	
	  this.$list.append(temp);
	  this.$select.append(temp2);
	  this.$alreadyLoad = true;
	};
	if(property.data)	this.loadListData(property.data);
	//动态远程载入数据,AJAX请求的参数将读取this.$ajaxType中的设置
	this.loadListDataAjax=function(){
		var inthis=this;
		$.ajax({
			  type:this.$ajaxType.type,
			  url:this.$ajaxType.url,
			  dataType:this.$ajaxType.dataType,
			  data:this.$ajaxType.para,
		success:function(data){
			inthis.loadListData(data);
		}});

};

//提示文字
$("input[type='text']").each(function () {
  if ($(this).val() == property.text) {
    $(this).bind("focus", function () {
      $(this).val("");
    }).blur(function () {
      $(this).val(property.text)
    });

  }
});

	//绑定当INPUT框被选中时的事件
	this.$input.bind("focus", { inthis: this }, //如果this.$autoLoad或!this.$alreadyLoad有一个为FALSE,则ajaxType将无效,可不传
	function (e) {
	  if (e && e.preventDefault) e.preventDefault(); //阻止默认浏览器动作(W3C)
	  else window.event.returnValue = false; //IE中阻止函数器默认动作的方式
	  var inthis = e.data.inthis;
//	  inthis.$autoLoad = true;
//	
//	
//	  inthis.$alreadyLoad = false;
//	  inthis.$ajaxType = false;
	  if (!inthis.$alreadyLoad && inthis.$autoLoad) {

	    if (inthis.$ajaxType) {//如果是远程AJAX获取数据

	      inthis.loadListDataAjax();
	    }
	    else 
      {
	      inthis.loadListData(inthis.$data);
	    }

	  }
	  var list = inthis.$list;

	  var height = inthis.$selectHeight;
	  var width = inthis.$width;
	  list.css("display", "block");
	  $(document).bind("mouseup", function (e) {
	    var locate = getElCoordinate(list.get(0));
	    var ev = mousePosition(e);
	    if (locate.left + width < ev.x || locate.left > ev.x || locate.top - 22 > ev.y || locate.top + height + 2 < ev.y) {
	      list.css("display", "none");
	    }
	    this.onmouseup = null;
	    return false;
	  });
	  return false;
	});
	//绑定当INPUT框中的内容被改变时的事件
	if(!this.$readOnly){
		if(this.$type=="filter"){//当type=="filter"时
		  this.$input.bind("change", { inthis: this }, function (e) {
		    var inthis = e.data.inthis;
		    //var text=""+this.value;
		    var text = $.trim(this.value)

		    var data = inthis.$data;
		    var temp = "";

		    if (inthis.$ajaxType) {//如果ajaxType属性有设置,则filter模式下,下拉框控件将在每次change时,动态从获取数据
		      inthis.$ajaxType.para["search"] = text; //后台需要对REQUEST传入的search变量有一个向前模糊匹配的查询功能
		      inthis.loadListDataAjax();
		    }
		    else {
		      for (var i = 0; i < data.length; ++i)
          {
		        if (data[i][1].indexOf(text) == 0)
		        temp +="<a href='#'><p " + (inthis.$haveIcon ? "style='text-indent:19px;background:" + data[i][2] + "' " : "") + "value='" + data[i][0] + "'>" + data[i][1] + "</p></a>";
		      }
		      inthis.$list.empty();
		      inthis.$list.append(temp);
		    }
		  });
		}
		else{
		  this.$input.bind("change", { inthis: this }, function (e) {
		    var text = this.value;
		    var inthis = e.data.inthis;
		    var data = e.data.inthis.$data;
		 
		    for (var i = 0; i < data.length; ++i) {
		      if (data[i][1] == text) {
		        if (inthis.$lastSelect)
		          inthis.$lastSelect.removeClass("active");
		        inthis.$lastSelect = inthis.$list.children("a:eq(" + i + ")").addClass("active");
		        now = inthis.$list.children("a:eq(" + i + ")").children("p");
		        inthis.$select.val(data[i][0]);
		        if (inthis.$haveIcon) {
		          $(this).parent(".text").css({
		            background: now.css("background"),
		            "background-image": "url(../images/combo_icon.gif)",
		            "background-position": now.css("background-position"),
		            "background-repeat": now.css("background-repeat")
		          });
		        }
		        break;
		      }
		    }
		  });
		}
		var once=null;
		this.$input.bind("keyup", { input: this.$input, list: this.$list }, function (e) {
		  if (!e) e = window.event;
		  if (e.keyCode == 13)
		    e.data.list.css("display", "none");
		  else if (e.keyCode == 40) {
		    var temp = e.data.list.children("a:eq(0)");
		    temp.focus();
		    temp.toggleClass("focus");
		  }
		  else {
		    //alert("进入keyup");
		    once = null;
		    once = setTimeout(function () { e.data.input.change(); }, 500);
		  }
		});
	}
	//绑定下拉按钮的事件
	this.$btn.bind("mousedown",function(){
		inthis=$(this);
		inthis.removeClass("btn_up");
		inthis.addClass("btn_down");
	});
	this.$btn.bind("mouseup",{input:this.$input},function(e){
		inthis=$(this);
		inthis.removeClass("btn_down");
		inthis.addClass("btn_up");
		e.data.input.focus();
	});
	//选中下拉框中一个指定索引的值(如果是multiple模式,且这个值原来已经被选定,则运行此函数后将会取消该选定)
	this.selectValue=function(index){
		if(index>0&&index<this.$data.length){
			var p=this.$list.children("a:eq("+index+")");
			if(this.$lastSelect)	this.$lastSelect.removeClass("active");
			this.$lastSelect=p;
			p.click();
		}
	};
	//绑定下拉列表单元被点击时的事件
	this.$list.bind("click",{inthis:this},function(e){
		if ( e && e.preventDefault )	e.preventDefault();//阻止默认浏览器动作(W3C)
		else	window.event.returnValue = false;//IE中阻止函数器默认动作的方式
		if(!e) e=window.event;
		var clicked=$(e.target);
		var inthis=e.data.inthis;
		if(clicked.attr("tagName")=="A")	clicked=clicked.children("p");
		else if(clicked.attr("tagName")=="UL"){
			this.style.display="none";
			return;
		}				
		if(inthis.$haveIcon){
			inthis.$input.parent(".text").css({
			background:clicked.css("background"),
			"background-image":"url(../images/combo_icon.gif)",
			"background-position":clicked.css("background-position"),
			"background-repeat":clicked.css("background-repeat")	
			});
		}
		if(inthis.$type!="multiple"){
			if(inthis.$lastSelect)	inthis.$lastSelect.removeClass("active");
			inthis.$lastSelect=clicked.parent("a").addClass("active");
			this.style.display="none";
			inthis.$select.val(clicked.attr("value"));
			inthis.$input.val(clicked.text());
		}
		else{
			clicked.parent("a").toggleClass("active");
			var optionList=inthis.$select.get(0).options;
			for(var i=0;i<optionList.length;++i){
				if(optionList[i].value==clicked.attr("value")){
					optionList[i].selected=!optionList[i].selected;
					break;
				}
			}
			inthis.$input.val(clicked.text()+" , ……");
		}
		inthis.$select.change();
		//alert(inthis.$select.val());
		return false;
	});
	//绑定当用户用鼠标上/下滑过选择列表内容时的事件
	this.$list.bind("mouseover",{list:this.$list},function(e){
		if(!e) e=window.event;
		var clicked=$(e.target);
		if(clicked.attr("tagName")=="P")	clicked=clicked.parent("a");
		else if(clicked.attr("tagName")=="UL"){
			return;
		}
		clicked.focus();
		clicked.addClass("focus");
	});
	this.$list.bind("mouseout",{list:this.$list},function(e){
		if(!e) e=window.event;
		var clicked=$(e.target);
		if(clicked.attr("tagName")=="P")	clicked=clicked.parent("a");
		else if(clicked.attr("tagName")=="UL")	return;
		clicked.removeClass("focus");
	});
	//绑定当用户用上/下方向键选择列表内容时的事件
	this.$list.bind("keydown",{inthis:this},function(e){
		if(!e) e=window.event;
		var inthis=e.data.inthis;
		if(e.keyCode==13){//回车
			if ( e && e.preventDefault )	e.preventDefault();//阻止默认浏览器动作(W3C)
			else	window.event.returnValue = false;//IE中阻止函数器默认动作的方式
			var clicked=$(e.target);
			if(clicked.attr("tagName")=="P")	clicked=clicked.parent("a");
			else if(clicked.attr("tagName")=="UL")	return;
			clicked.focus();
			clicked.click();
			return false;
		}
		else if(e.keyCode==40){
			var clicked=$(e.target);
			if(clicked.attr("tagName")=="P")	clicked=clicked.parent("a");
			else if(clicked.attr("tagName")=="UL")	return;
			var now=$(e.target);
			var next=$(e.target).next("a:eq(0)");
			if(next.length>0){
				now.removeClass("focus");
				next.addClass("focus");
				next.focus();
			}
		}
		else if(e.keyCode==38){
			var clicked=$(e.target);
			if(clicked.attr("tagName")=="P")	clicked=clicked.parent("a");
			else if(clicked.attr("tagName")=="UL")	return;
			var now=$(e.target);
			var prev=$(e.target).prev("a");
			if(prev.length>0){
				now.removeClass("focus");
				prev.addClass("focus");
				prev.focus();
			}
		}
	});
	//返回下拉框的被选值//如果是多选,则会返回一串值构成的字符串,以逗号隔开
	//此下拉框也可放在一般的FORM之中,并像普通的SELECT下拉菜单控件一样操作,当FORM提交时,后台可request获取一个被选取值的数组
	this.getValue=function(){
		return this.$select.val();
	};

	//绑定当控件中隐藏的SELECT的值变化以后,触发的方法,通过对其设置,可达到drop-on-drop的多个下拉框相互联动功能,参数Fn为要触发执行的函数
	this.bindValueChange=function(Fn){
	  this.$select.bind("change", Fn);

	};
	//删除一个选择项,index为定位参数,从0开始(即第一行的选择项)
	this.delItem=function(index){
		if(index>-1&&index<this.$data.length){
			this.$data.splice(index,1);
			this.$select.get(0).options.remove(index);
			this.$list.children("a:eq("+index+")").remove();
		}
	};
	//增加一个选择项,项,index为定位参数,从0开始(即第一行的选择项)
	this.addItem=function(index,Item){
		if(index=this.$data.length){//如果是加在最末尾
			this.$data[index]=Item;
			this.$list.append("<a href='#'><p "+(this.$haveIcon? "style='text-indent:19px;background:"+Item[2]+"' " : "")+"value='"+Item[0]+"'>"+Item[1]+"</p></a>");
		}
		else{
			this.$data.splice(index,0,Item);
			this.$list.children("a:eq("+index+")").before("<a href='#'><p "+(this.$haveIcon? "style='text-indent:19px;background:"+Item[2]+"' " : "")+"value='"+Item[0]+"'>"+Item[1]+"</p></a>");
		}
		this.$select.get(0).options.add(new Option(Item[1], Item[0]));
	};
	//清除所有选项
	this.clearItems=function(){
		this.$data=null;
		this.$data=[];
		this.$list.empty();
		this.$select.get(0).options.length=0;
		this.$select.empty();
		this.$alreadyLoad=false;
	};
}

 

//将此类的构造函数加入至JQUERY对象中
jQuery.extend({
	createGooCombo: function(dom,property) {
		return new GooCombo(dom,property);
 }
}); </pre><br>
HTML页面:(要先引入jquery 库)<br>
       $(document).ready(function () {<br>
              <br>
           //创建控件开始<br>
            var property =<br>
           {<br>
               id: "demo",<br>
               name: "demo",<br>
               type: "filter",<br>
               readOnly: false,<br>
               width: 160,<br>
               selectHeight: 140,<br>
               autoLoad: true,<br>
               haveIcon: false,<br>
               text: "可输入员工姓名查找"<br>
           }<br>
             var combo = $.createGooCombo(document.getElementById("combo"), property);<br>
             combo.loadListData(datas);<br>
             //创建控件结束<br>
})<br>
<br>
<span style="color:#FF0000">datas是由ashx一般处理文件生成二维数组的json字符串 var datas=["+jsonString+"]</span><br>
<pre name="code" class="vb"> </pre><pre name="code" class="csharp">  public string CreateJsonParameters(DataTable dt)
  {
    System.Text.StringBuilder sb = new System.Text.StringBuilder();

    if (dt != null)
    {
      for (int i = 0; i < dt.Rows.Count -1; i++)
      {
        if (i < dt.Rows.Count - 1)
        {
          sb.Append("[" + dt.Rows[i]["EmployeeID"].ToString() + ", " + dt.Rows[i]["EmployeeNameID"].ToString() + "],");
        
        }
        else if (i == dt.Rows.Count - 1)
        {
          sb.Append("[" + dt.Rows[i]["EmployeeID"].ToString() + "," + dt.Rows[i]["EmployeeNameID"].ToString() + "],");
        }
      }
    }
      
     return   sb.ToString().TrimEnd(",".ToCharArray());
  
  }</pre><br>
<br>
<br>
<br>
 
<pre></pre>
<pre></pre>
<pre></pre>
<pre></pre>
<pre></pre>
<pre></pre>
<pre></pre>
<pre></pre>
<pre></pre>
  
</pre></pre></pre>

以上就是小编为大家带来的可输入文字查找ajax下拉框控件 ComBox的实现方法全部内容了,希望大家多多支持~

加载全部内容

相关教程
猜你喜欢
用户评论