工作计划：
学习并实现K线图的分布，本地数据的展示，如证券的折线图。
以及相关常用图的实践应用。
完成情况：已完成.
效果展示：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>测试K线图</title>
<!--引入echart.min.js插件-->
<script type="text/javascript" src="../js/echarts.min.js" ></script>
<style type="text/css">
.con{
}
</style>
</head>
<body>
<!--2定义一个高宽固定的Dom-->
<div class="con" >
<div id = "main" style="width :900px;height:600px;"></div>
</div>
<!--3设计js脚本语言-->
<script type="text/javascript">
//初始化Echarts插件
var myChart = echarts.init(document.getElementById(\'main\'));
//进行图表数据建设。
//上证指数由四类数据：开盘盘：open;收盘close;最低lowest;最高：highest.同时包含时间
//建立相关的数据存储的本地数组
var data0 = splitData([
[\'2013/1/24\', 2320.26,2320.26,2287.3,2362.94],
[\'2013/1/25\', 2300,2291.3,2288.26,2308.38],
[\'2013/1/28\', 2295.35,2346.5,2295.35,2346.92],
[\'2013/1/29\', 2347.22,2358.98,2337.35,2363.8],
[\'2013/1/30\', 2360.75,2382.48,2347.89,2383.76],
[\'2013/1/31\', 2383.43,2385.42,2371.23,2391.82],
[\'2013/2/1\', 2377.41,2419.02,2369.57,2421.15],
[\'2013/2/4\', 2425.92,2428.15,2417.58,2440.38],
[\'2013/2/5\', 2411,2433.13,2403.3,2437.42],
[\'2013/2/6\', 2432.68,2434.48,2427.7,2441.73],
[\'2013/2/7\', 2430.69,2418.53,2394.22,2433.89],
[\'2013/2/8\', 2416.62,2432.4,2414.4,2443.03],
[\'2013/2/18\', 2441.91,2421.56,2415.43,2444.8],
[\'2013/2/19\', 2420.26,2382.91,2373.53,2427.07],
[\'2013/2/20\', 2383.49,2397.18,2370.61,2397.94],
[\'2013/2/21\', 2378.82,2325.95,2309.17,2378.82],
[\'2013/2/22\', 2322.94,2314.16,2308.76,2330.88],
[\'2013/2/25\', 2320.62,2325.82,2315.01,2338.78],
[\'2013/2/26\', 2313.74,2293.34,2289.89,2340.71],
[\'2013/2/27\', 2297.77,2313.22,2292.03,2324.63],
[\'2013/2/28\', 2322.32,2365.59,2308.92,2366.16],
[\'2013/3/1\', 2364.54,2359.51,2330.86,2369.65],
[\'2013/3/4\', 2332.08,2273.4,2259.25,2333.54],
[\'2013/3/5\', 2274.81,2326.31,2270.1,2328.14],
[\'2013/3/6\', 2333.61,2347.18,2321.6,2351.44],
[\'2013/3/7\', 2340.44,2324.29,2304.27,2352.02],
[\'2013/3/8\', 2326.42,2318.61,2314.59,2333.67],
[\'2013/3/11\', 2314.68,2310.59,2296.58,2320.96],
[\'2013/3/12\', 2309.16,2286.6,2264.83,2333.29],
[\'2013/3/13\', 2282.17,2263.97,2253.25,2286.33],
[\'2013/3/14\', 2255.77,2270.28,2253.31,2276.22],
[\'2013/3/15\', 2269.31,2278.4,2250,2312.08],
[\'2013/3/18\', 2267.29,2240.02,2239.21,2276.05],
[\'2013/3/19\', 2244.26,2257.43,2232.02,2261.31],
[\'2013/3/20\', 2257.74,2317.37,2257.42,2317.86],
[\'2013/3/21\', 2318.21,2324.24,2311.6,2330.81],
[\'2013/3/22\', 2321.4,2328.28,2314.97,2332],
[\'2013/3/25\', 2334.74,2326.72,2319.91,2344.89],
[\'2013/3/26\', 2318.58,2297.67,2281.12,2319.99],
[\'2013/3/27\', 2299.38,2301.26,2289,2323.48],
[\'2013/3/28\', 2273.55,2236.3,2232.91,2273.55],
[\'2013/3/29\', 2238.49,2236.62,2228.81,2246.87],
[\'2013/4/1\', 2229.46,2234.4,2227.31,2243.95],
[\'2013/4/2\', 2234.9,2227.74,2220.44,2253.42],
[\'2013/4/3\', 2232.69,2225.29,2217.25,2241.34],
[\'2013/4/8\', 2196.24,2211.59,2180.67,2212.59],
[\'2013/4/9\', 2215.47,2225.77,2215.47,2234.73],
[\'2013/4/10\', 2224.93,2226.13,2212.56,2233.04],
[\'2013/4/11\', 2236.98,2219.55,2217.26,2242.48],
[\'2013/4/12\', 2218.09,2206.78,2204.44,2226.26],
[\'2013/4/15\', 2199.91,2181.94,2177.39,2204.99],
[\'2013/4/16\', 2169.63,2194.85,2165.78,2196.43],
[\'2013/4/17\', 2195.03,2193.8,2178.47,2197.51],
[\'2013/4/18\', 2181.82,2197.6,2175.44,2206.03],
[\'2013/4/19\', 2201.12,2244.64,2200.58,2250.11],
[\'2013/4/22\', 2236.4,2242.17,2232.26,2245.12],
[\'2013/4/23\', 2242.62,2184.54,2182.81,2242.62],
[\'2013/4/24\', 2187.35,2218.32,2184.11,2226.12],
[\'2013/4/25\', 2213.19,2199.31,2191.85,2224.63],
[\'2013/4/26\', 2203.89,2177.91,2173.86,2210.58],
[\'2013/5/2\', 2170.78,2174.12,2161.14,2179.65],
[\'2013/5/3\', 2179.05,2205.5,2179.05,2222.81],
[\'2013/5/6\', 2212.5,2231.17,2212.5,2236.07],
[\'2013/5/7\', 2227.86,2235.57,2219.44,2240.26],
[\'2013/5/8\', 2242.39,2246.3,2235.42,2255.21],
[\'2013/5/9\', 2246.96,2232.97,2221.38,2247.86],
[\'2013/5/10\', 2228.82,2246.83,2225.81,2247.67],
[\'2013/5/13\', 2247.68,2241.92,2231.36,2250.85],
[\'2013/5/14\', 2238.9,2217.01,2205.87,2239.93],
[\'2013/5/15\', 2217.09,2224.8,2213.58,2225.19],
[\'2013/5/16\', 2221.34,2251.81,2210.77,2252.87],
[\'2013/5/17\', 2249.81,2282.87,2248.41,2288.09],
[\'2013/5/20\', 2286.33,2299.99,2281.9,2309.39],
[\'2013/5/21\', 2297.11,2305.11,2290.12,2305.3],
[\'2013/5/22\', 2303.75,2302.4,2292.43,2314.18],
[\'2013/5/23\', 2293.81,2275.67,2274.1,2304.95],
[\'2013/5/24\', 2281.45,2288.53,2270.25,2292.59],
[\'2013/5/27\', 2286.66,2293.08,2283.94,2301.7],
[\'2013/5/28\', 2293.4,2321.32,2281.47,2322.1],
[\'2013/5/29\', 2323.54,2324.02,2321.17,2334.33],
[\'2013/5/30\', 2316.25,2317.75,2310.49,2325.72],
[\'2013/5/31\', 2320.74,2300.59,2299.37,2325.53],
[\'2013/6/3\', 2300.21,2299.25,2294.11,2313.43],
[\'2013/6/4\', 2297.1,2272.42,2264.76,2297.1],
[\'2013/6/5\', 2270.71,2270.93,2260.87,2276.86],
[\'2013/6/6\', 2264.43,2242.11,2240.07,2266.69],
[\'2013/6/7\', 2242.26,2210.9,2205.07,2250.63],
[\'2013/6/13\', 2190.1,2148.35,2126.22,2190.1]
]);
//进行数组的切割，分理出数组的信息：日期和数据。
function splitData(rawData){
//定义初始化接收数据和日期的数组
var categoryData = [];//用来接收返回的数组
var values = []
//利用for循环依次遍历
for (var i = 0; i < rawData.length; i++)
{
//splice(0,1)[0],删除第一项并且把它返回给catagotyData
categoryData.push(rawData[i].splice(0,1)[0]);
//push() 方法可向数组的末尾添加一个或多个元素，并返回新的长度。
values.push(rawData[i])//返回删除日期后的数组
}
return {
categoryData :categoryData ,
values: values
};
};
//求格子那个数据的平均值。
//计算MA平均线，N日移动平均线=N日收盘价之和/N dayCount要计算的天数(5,10,20,30)
function calculateMA(dayCount){
var result = [];//初始化
for(var i = 0,len = data0.values.length;i <len ;i ++)
{
if(i< dayCount)
{
result.push(\'-\');
continue;
}
var sum = 0;
for (var j = 0; j < dayCount;j++)
{
sum +=data0.values[i - j][1];
}
result.push(sum / dayCount);
}
return result;
};
//设置图标的属性内容
option = {
//设置标题
title:{
text:\'测试上证指数\',
subtext:\'吕泽坤\',
left:0,
borderColor:\'#ccc\',
borderWidth:\'1\',
textStyle:{
fontSize:20
}
},
//工具箱
toolbox:{
show :true,//是否显示
feature:{
saveAsImage:{
show :true,
title:\'保存图片\'
},
restore:{
show:true,
title:\'还原\',
},
magicType:{
show:true,
type:[\'line\',\'bar\'],
title:{line:\'切换为折线图\',bar:\'切换为柱状图\'}
}
}
},
//提示框
tooltip:{
trigger:\'axis\',
axisPointer:{
type:\'line\'
}
},
//图标
legend:{
data:[\'日K\',\'MA5\',\'MA10\',\'MA20\',\'MA30\']
},
grid:{
left:\'10%\',
right:\'10%\',
bottom:\'15%\'
},
//图表数据x轴
xAxis:{
type:\'category\',//坐标轴类型，类目轴
data: data0.categoryData,//x轴获取数据处。
scale:true,
boundaryGap : false,//刻度分割线
axisLine: {onZero:false},
splitLine:{show:false},//是否显示坐标轴
splitNumber:20,//坐标轴的分割段数
min:\'dataMin\',//特殊值，数值上最小值作为最小刻度
max:\'dataMax\'//特殊值，数轴最大值作为最大刻度
},
yAxis:{
scale:true,
splitArea:{
show:true
}
},
dataZoom:[
{//缩放。
type:\'inside\',
start:50,
end:100
},
{
show:true,
type:\'slider\',
y:\'90%\',
start:50,
end:100
}
],
series:
[
{
name:\'日K\',
type:\'candlestick\', //k线图
data:data0.values,//y轴对应的数据。
//图标标注
markPoint:{
label:{//显示图标的文本
normal:{
formatter:function (param){
return param !=null?
Math.round(param.value):\'\';
}
}
},
data:[
{
name:\'XX标点\',
coord:[\'2013/5/31\',2300],//指定数据的坐标位置
value:2300,
itemStyle:{
normal:{color:\'rgb(41,60,85)\'}
}
},
//以下是三个最大最小平均值的点。
{
name:\'highest value\',
type:\'max\',
valueDim:\'highest\'//在higest维度上的最大值最高价
},
{
name:\'lowest value\',
type:\'min\',
valueDim:\'lowest\'
},
{
name:\'average value on close\',
type:\'average\',
valueDim:\'close\'
}
],
tooltip:{
//提示框
formatter:function(param){
return param.name + \'<br>\' + (param.data.coord || \'\');
}
}
},
markLine:
{
//表现两端的的类型
symbol:[\'none\',\'none\'],
data:
[
[
{
name:\'from lowest to highest\',
type:\'min\',//设置该标线为最小值的线
valueDim:\'lowest\',//指定那个维度的最小值
symbol:\'circle\',
symbolSize: 10,//起点标记大小
label: {
normal:{show:false},
emphasis:{show: false}
}
},
{
type:\'max\',//最大的标记线
valuDim:\'highest\',
symbol:\'circle\',
symbolSize:10,
label:{
normal: {show:false},
emphasis: {show: false}
}
}
],
{
name:\'min line on close\',
type:\'min\',
valueDim:\'close\'
},
{
name:\'max line on close\',
type: \'max\',
valueDim: \'close\'
}
]
}
},
//显示MA5,MA10等折线图
{
//MA 5天内收盘价之和/5
name: \'MA5\',
type:\'line\',
data:calculateMA(5),
smooth:true,
lineStyle:{
normal:{opacity:0.5}
}
},
{
name:\'MA10\',
type:\'line\',
data:calculateMA(10),
smooth:true,
lineStyle:{
normal:{opacity:0.5}
}
},
{
name:\'MA20\',
type:\'line\',
data:calculateMA(20),
smooth:true,
lineStyle:{
normal:{opacity:0.5}
}
},
{
name:\'MA30\',
type:\'line\',
data:calculateMA(30),
smooth:true,
lineStyle:{
normal:{opacity:0.5}
}
},
]
};
//使用之前的数据和配置项生成图表
myChart.setOption(option);
</script>
</body>
</html>
内容总结与错误：
- 按照往常建立相关的DOM，和初始化Echarts插件，设置本地数组用来读取数据。
- 将数组第一项日期分离出来，利用js中splice(0,1)[0]删除第一项，并且返回数组。利用push()函数给新的数组赋值。
- 标注图标，分表标出最大最小，平均和固定值展示。
- 出现最大错误：只显示图，而没有数据显示。原因在于循环数据，获取数据的时候length错误，或者data处获取数据失败，检查方法是否填对，改正。
- 小错很多例如编写不规范，无提示，方法名写错，（）[] {}三种类型容易出错。例如：依次改正
"Uncaught SyntaxError: Unexpected token ." /Echarts_Study/Juchu01/Kline.html (255)
Uncaught SyntaxError: Unexpected identifier" /Echarts_Study/Juchu01/Kline.html (299)
Uncaught SyntaxError: Unexpected token :" /Echarts_Study/Juchu01/Kline.html (320)