绘制 50 万个点 | JShare

function getData(n) {
    var arr = [],
        i,
        a,
        b,
        c,
        spike;
    for (i = 0; i < n; i = i + 1) {
        if (i % 100 === 0) {
            a = 2 * Math.random();
        }
        if (i % 1000 === 0) {
            b = 2 * Math.random();
        }
        if (i % 10000 === 0) {
            c = 2 * Math.random();
        }
        if (i % 50000 === 0) {
            spike = 10;
        } else {
            spike = 0;
        }
        arr.push([
            i,
            2 * Math.sin(i / 100) + a + b + c + spike + Math.random()
        ]);
    }
    return arr;
}
var data = getData(500000);
console.time('area');
Highcharts.chart('container', {
    chart: {
        type: 'area',
        zoomType: 'x'
    },
    boost: {
        useGPUTranslations: true
    },
    title: {
        text: 'Highcharts 绘制 ' + data.length + ' 个数据例子'
    },
    subtitle: {
        text: '使用了性能提升模块（boost.js）'
    },
    tooltip: {
        valueDecimals: 2
    },
    series: [{
        data: data
    }]
});
console.timeEnd('area');

<div id="container"></div>

{"doctype":0,"resouces":"3,7,40","options":"{\"editor\":{\"saveLayout\":false,\"saveFold\":false,\"autoFormat\":true},\"hcode\":{\"layoutId\":0}}","meta":""}

绘制 50 万个点 | JShare

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