异步加载统计图组件（jquery+css+div）

来源：互联网发布：浙江电信网络测速编辑：程序博客网时间：2024/06/05 16:44

效果：

===============zimg.html代码===============

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>异步加载统计图组件（jquery）</title></head><script type="text/javascript" src="http://code.jquery.com/jquery-1.6.3.min.js"></script><script language="javascript">jQuery(function(){    var i = 0;//起始索引    var o = $(".images");//统计图对象    var l = o.length;//统计图的数量    var options = new Object;//统计图参数        odrImage(i);//执行    function odrImage(i){        var oi = o.eq(i);        if(i<l){            $.get("data.php",{"oid":oi.attr("oid")},function(data){//异步加载                     if(data){                         //options.maxval = 1000;//纵轴最大值，默认是所有值之和                         options.title = "城市消费统计图-"+i; //标题                         options.datas = jQuery.parseJSON(data);//数据                         oi.empty().zImage(options);                                             odrImage(++i)                     }              })                 }        return false;    }    })    </script><body><div class="images" oid="258" ></div><div class="images" oid="257"></div><div class="images" oid="253"></div></body></html> <script language="javascript">//统计图组件(function($){       $.fn.zImage = function(options){        if(!(options instanceof Object)){alert("参数是个对象");return false;}        var title = 'title' in options ? options.title : "标题";        var datas = options.hasOwnProperty('datas') ? options.datas : [];        var total = $.itotal(datas);//总数                 var length = total.length;//数组长度        var datas = total.data;//数据        var tags = total.tag;//标签        var hrefs = total.href;//连接        var colors = total.color;//颜色        //============画布        var canvas = new Object();        var cW = 430;//画布的宽        var cH = 250;//画布的高        var canvasStyle;        //默认样式        if('canvas' in options){            cW = options.canvas.width ? parseInt(options.canvas.width) : cW;            cH = options.canvas.height ? parseInt(options.canvas.height) : cH;            canvasStyle = options.canvas        }               canvas.defaults = {width:cW+"px",height:cH+"px",background:"#FFFFFF",position:"relative"};        var opts = $.extend(canvas.defaults,canvasStyle);        this.css(opts);        //===========标题        var tH = 30;//标题的高        var tT = 20;//向上偏移量        var titleT = $("<div>").css({"position":"relative","text-align":"center","height":tH+"px","font-size":"24px","font-weight":"bold","top":tT+"px"}).text(title);        this.append(titleT);              //===========X轴网格               var lineX;//X轴网格线        var tagX;//x轴tag        var lxB;//每个网格的下偏移量        var xB = 30;//下偏移量        var xL = 50;//左偏移量               var lxS = 'numx' in options ? options.numx :6;//网格的数量               var txW = 'xw' in options ? options.xw :20;//调节网格间隔基数        var lxW = (cH-tH-tT-xB-20)/lxS;//网格间隔        var xW = cW-xL-5;//x轴的长度             var showSize;//Y轴显示的最大值        if('maxval' in options){            showSize = options.maxval;        }else{//自动判断Y轴的最大值            showSize = total.mval;            var sl = String(showSize).length;            var sj = new Array(sl).join("0");            var sc = parseInt("1"+sj);            var ss;                       for(var f=1;f<100;f++){                ss = f*sc*lxS;                if(ss > showSize){                    showSize = ss;                    break;                }            }        }        var tD = showSize/lxS;//y轴上显示的基数        var bg;        for(var i=0;i<=lxS;i++){            lxB = (i * lxW)+xB;            tagD = Math.round(i*tD);            bg = i==0 ? "#000000":"#CCCCCC";            lineX = $("<div>").css({width:xW+"px",height:"1px",left:xL+"px",background:bg,position:"absolute",bottom:lxB+"px","font-size":"0px","overflow":"hidden"});            tagX = $("<div>").css({position:"absolute",bottom:lxB+"px",right:(xW+8)+"px","font-size":".8em","color":"#333333","line-height":".8em"}).text(tagD);            this.append(lineX).append(tagX);        }         //===========Y轴网格                       var lineY;//Y轴网格线        var tagY;//Y轴tag        var sizeY;//数据上显示的数值        var sizeHref;//数值上的链接               var lyL;//每个网格的左偏移量              var yH = lxW*lxS;//y轴的高        var yL = 50;//左偏移量        var lyS = length;//网格数量        var lyW = (cW-xL-10)/lyS;//网格间隔        var tdW = 'dw' in options ?options.dw : 20;//调节数据宽度基数        var dW = (lyW-tdW)>0 ? (lyW-tdW-10) :  lyW-10;//数据宽度        var yB = xB;//y轴下偏移量        var dH;//数据的高度        var dC;//数据的颜色        for(var i=0;i<=lyS;i++){            lyL = (i * lyW)+yL;                 bg=i==0?"#000000":"#CCCCCC";            if(i>0){                               dH = Math.round(datas[i]*lxW/tD);                     dC = colors[i]?    colors[i] : "#FF6600";                dataY = $("<div>").css({width:dW+"px",height:dH+"px",background:dC,position:"absolute",left:(lyL-(dW+lyW)/2)+"px",bottom:yB+"px","font-size":"0px","overflow":"hidden"});                tagY = $("<div>").css({position:"absolute",left:(lyL-lyW)+"px",bottom:(yB-20)+"px","text-align":"center",width:lyW+"px","font-size":".8em","color":"#333333"}).text(tags[i]);                sizeHref = $("<a>").attr({"target":"_blank","href":hrefs[i],'title':tags[i]}).text(datas[i]).css({"text-decoration":"none","color":"#0099CC","font-size":".8em"}).hover(function (){$(this).css("color","#FF0000");},function (){$(this).css("color","#0099CC");});                sizeY = $("<div>").css({position:"absolute",left:(lyL-lyW)+"px",bottom:(yB+dH+5)+"px","text-align":"center",width:lyW+"px"}).html(sizeHref);                this.append(tagY).append(dataY).append(sizeY);            }            lineY = $("<div>").css({width:"1px",height:yH+"px",background:bg,position:"absolute",left:lyL+"px",bottom:yB+"px"});            this.append(lineY);               }       }    //计算数据总值    $.itotal = function(array){        var length = 0;        var color = [0];        var href =[0];        var tag = [0];        var data = [0];        var mval = 0;               var dt = 0;        $.each(array,function(k,v){                   length++;            dt = parseInt(v['data']);            mval = mval > dt ? mval:dt;            data.push(dt);            href.push(v['href']);                       color.push(v['color']);                       tag.push(k);        })        //console.log(data);        return {"mval":mval,"length":length,"data":data,"tag":tag,"href":href,"color":color};    }    //取最大值    $.maxval = function(array){         var sarray = array.sort(function(a, b){return b-a;});         return sarray[0];    }            })(jQuery)</script>

===============data.php数据===============

header( 'Content-type: text/html;charset=utf-8' );//设置页面编码//图一$cy["258"]["北京"] = array("data"=>500,"href"=>"http://www.baidu.com/s?wd=北京","color"=>"#FF0000");$cy["258"]["上海"] = array("data"=>800,"href"=>"http://www.baidu.com/s?wd=上海","color"=>"#00FF00");$cy["258"]["深圳"] = array("data"=>700,"href"=>"http://www.baidu.com/s?wd=深圳","color"=>"#0000FF");//图二$cy["257"]["北京"] = array("data"=>500,"href"=>"http://www.baidu.com/s?wd=北京","color"=>"#FF0000");$cy["257"]["深圳"] = array("data"=>700,"href"=>"http://www.baidu.com/s?wd=深圳","color"=>"#0000FF");$cy["257"]["天津"] = array("data"=>300,"href"=>"http://www.baidu.com/s?wd=天津","color"=>"#FFFF00");//图三$cy["253"]["北京"] = array("data"=>500,"href"=>"http://www.baidu.com/s?wd=北京","color"=>"#FF0000");$cy["253"]["上海"] = array("data"=>800,"href"=>"http://www.baidu.com/s?wd=上海","color"=>"#00FF00");$cy["253"]["深圳"] = array("data"=>700,"href"=>"http://www.baidu.com/s?wd=深圳","color"=>"#0000FF");$cy["253"]["天津"] = array("data"=>300,"href"=>"http://www.baidu.com/s?wd=天津","color"=>"#FFFF00");if($ct = $cy[$_GET["oid"]]){echo json_encode($ct);}sleep(1);