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操作：http://localhost/test/zimg.html
效果：
![[置頂] 異步加載統計圖組件（jquery+css+div）](http://pic002.cnblogs.com/images/2012/476844/2012121211190836.png)
===============zimg.html代碼===============
<!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>異步加載統計圖組件（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");//統計圖對象 var l = o.length;//統計圖的數量 var options = new Object;//統計圖參數 odrImage(i);//執行 function odrImage(i){ var oi = o.eq(i); if(i<l){ $.get("data.php",{"oid":oi.attr("oid")},function(data){//異步加載 if(data){ //options.maxval = 1000;//縱軸最大值，默認是自動算 options.title = "城市消費統計圖-"+i; //標題 options.datas = jQuery.parseJSON(data);//數據 oi.empty().zImage(options); odrImage(++i) } }) } return false; } }) </script> <body> <div class="images" oid="258" ></div> <div class="images" oid="257"></div> <div class="images" oid="253"></div> </body> </html> <script language="javascript"> //統計圖組件 (function($){ $.fn.zImage = function(options){ if(!(options instanceof Object)){alert("參數是個對象");return false;} var title = 'title' in options ? options.title : "標題"; var datas = options.hasOwnProperty('datas') ? options.datas : []; var total = $.itotal(datas);//總數 var length = total.length;//數組長度 var datas = total.data;//數據 var tags = total.tag;//標簽 var hrefs = total.href;//連接 var colors = total.color;//顏色 //============畫布 var canvas = new Object(); var cW = 430;//畫布的寬 var cH = 250;//畫布的高 var canvasStyle; //默認樣式 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); //===========標題 var tH = 30;//標題的高 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軸網格 var lineX;//X軸網格線 var tagX;//x軸tag var lxB;//每個網格的下偏移量 var xB = 30;//下偏移量 var xL = 50;//左偏移量 var lxS = 'numx' in options ? options.numx :6;//網格的數量 var txW = 'xw' in options ? options.xw :20;//調節網格間隔基數 var lxW = (cH-tH-tT-xB-20)/lxS;//網格間隔 var xW = cW-xL-5;//x軸的長度 var showSize;//Y軸顯示的最大值 if('maxval' in options){ showSize = options.maxval; }else{//自動判斷Y軸的最大值 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軸上顯示的基數 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軸網格 var lineY;//Y軸網格線 var tagY;//Y軸tag var sizeY;//數據上顯示的數值 var sizeHref;//數值上的鏈接 var lyL;//每個網格的左偏移量 var yH = lxW*lxS;//y軸的高 var yL = 50;//左偏移量 var lyS = length;//網格數量 var lyW = (cW-xL-10)/lyS;//網格間隔 var tdW = 'dw' in options ?options.dw : 20;//調節數據寬度基數 var dW = (lyW-tdW)>0 ? (lyW-tdW-10) : lyW-10;//數據寬度 var yB = xB;//y軸下偏移量 var dH;//數據的高度 var dC;//數據的顏色 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); } } //計算數據總值 $.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數據===============
header( 'Content-type: text/html;charset=utf-8' );//設置頁面編碼 //圖一 $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"); //圖二 $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"); //圖三 $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);
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