鍍金池/ 問答/HTML/ 新手關(guān)于echarts異步調(diào)用問題請教。

新手關(guān)于echarts異步調(diào)用問題請教。

我異步處理這個(gè)數(shù)據(jù)并顯示出來，把data0的數(shù)據(jù)放到文件 abc.json.這個(gè)怎么處理，還有調(diào)用異步的時(shí)候是帶name: 'MA5'這些放異步里面嗎？還是可以先加載。異步只要填入數(shù)據(jù)就可以了。自己整了很久沒解決。只能提問了。另外代碼可以放在XXX.JS里面嗎？

我放在XXX.JS里面用<script scr="xxx.js"></script> 加載的時(shí)候，
第一句 var myChart = echarts.init(document.getElementById('main'), 'light');
就報(bào)錯(cuò)是為什么。

懇請批點(diǎn)。非常感謝

官方源碼。

var upColor = '#ec0000';
var upBorderColor = '#8A0000';
var downColor = '#00da3c';
var downBorderColor = '#008F28';

// 數(shù)據(jù)意義：開盤(open)，收盤(close)，最低(lowest)，最高(highest)
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]

]);

function splitData(rawData) {

var categoryData = [];
var values = []
for (var i = 0; i < rawData.length; i++) {
    categoryData.push(rawData[i].splice(0, 1)[0]);
    values.push(rawData[i])
}
return {
    categoryData: categoryData,
    values: values
};

}

function calculateMA(dayCount) {

var result = [];
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;

}

option = {

title: {
    text: '上證指數(shù)',
    left: 0
},
tooltip: {
    trigger: 'axis',
    axisPointer: {
        type: 'cross'
    }
},
legend: {
    data: ['日K', 'MA5', 'MA10', 'MA20', 'MA30']
},
grid: {
    left: '10%',
    right: '10%',
    bottom: '15%'
},
xAxis: {
    type: 'category',
    data: data0.categoryData,
    scale: true,
    boundaryGap : false,
    axisLine: {onZero: false},
    splitLine: {show: false},
    splitNumber: 20,
    min: 'dataMin',
    max: 'dataMax'
},
yAxis: {
    scale: true,
    splitArea: {
        show: true
    }
},
dataZoom: [
    {
        type: 'inside',
        start: 50,
        end: 100
    },
    {
        show: true,
        type: 'slider',
        y: '90%',
        start: 50,
        end: 100
    }
],
series: [
    {
        name: '日K',
        type: 'candlestick',
        data: data0.values,
        itemStyle: {
            normal: {
                color: upColor,
                color0: downColor,
                borderColor: upBorderColor,
                borderColor0: downBorderColor
            }
        },
        markPoint: {
            label: {
                normal: {
                    formatter: function (param) {
                        return param != null ? Math.round(param.value) : '';
                    }
                }
            },
            data: [
                {
                    name: 'XX標(biāo)點(diǎn)',
                    coord: ['2013/5/31', 2300],
                    value: 2300,
                    itemStyle: {
                        normal: {color: 'rgb(41,60,85)'}
                    }
                },
                {
                    name: 'highest value',
                    type: 'max',
                    valueDim: 'highest'
                },
                {
                    name: 'lowest value',
                    type: 'min',
                    valueDim: 'lowest'
                },
                {
                    name: 'average value on close',
                    type: 'average',
                    valueDim: 'close'
                }
            ],
            tooltip: {
                formatter: function (param) {
                    return param.name + '<br>' + (param.data.coord || '');
                }
            }
        },
        markLine: {
            symbol: ['none', 'none'],
            data: [
                [
                    {
                        name: 'from lowest to highest',
                        type: 'min',
                        valueDim: 'lowest',
                        symbol: 'circle',
                        symbolSize: 10,
                        label: {
                            normal: {show: false},
                            emphasis: {show: false}
                        }
                    },
                    {
                        type: 'max',
                        valueDim: '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'
                }
            ]
        }
    },
    {
        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}
        }
    },

]

};

題目描述

題目來源及自己的思路

相關(guān)代碼

// 請把代碼文本粘貼到下方（請勿用圖片代替代碼）

你期待的結(jié)果是什么？實(shí)際看到的錯(cuò)誤信息又是什么？

回答
編輯回答
我以為

var myChart = echarts.init(document.getElementById('main'), 'light'); 報(bào)錯(cuò)一般是因?yàn)樵陧撁嫔蠜]有找到id='main'的元素。
異步調(diào)用的時(shí)候，可以這樣操作：
先聲明一個(gè)空數(shù)組var result=[]，在option中直接給series寫上data:result。
如：
var option={

...,
series:[
    {
        ...,
        data:result
    }
]

};
待異步調(diào)用結(jié)束時(shí)，給result賦值，然后再次執(zhí)行myChart.setOption(option,true);

2018年4月20日 10:08
編輯回答
鐧簞噯

沒有看到你的實(shí)際報(bào)錯(cuò)是什么？是不是沒有引入echarts?是不是DOM不存在？異步的話，就是指setOption方法賦值。

2018年4月6日 10:56