85 lines
2.0 KiB
JavaScript
85 lines
2.0 KiB
JavaScript
let dataArr = [];
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const myChart = echarts.init(document.getElementById("chart"));
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const filename = "final__price.json";
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const periods = [
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"all time",
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"last 7 days",
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"last 28 days",
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"last 365 days",
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"last 2 years",
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];
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async function fetchDataForChart(selectedValue) {
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try {
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const apiEndpoint = `${apiURL}/get_json/${filename}?period=${selectedValue}`;
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const response = await fetch(apiEndpoint);
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if (!response.ok) {
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throw new Error(`HTTP error! status: ${response.status}`);
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}
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const dataArr = await response.json();
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initEchart(dataArr);
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} catch (error) {
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console.error("Fetching data failed:", error);
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}
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}
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function initEchart(dataArr) {
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const option = {
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backgroundColor: backgroundColor,
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tooltip: tooltip,
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toolbox: toolboxParams,
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xAxis: {
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data: dataArr.map((row) => row.date),
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axisTick: axisTick,
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axisLabel: axisLabel,
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axisLine: axisLine,
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},
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grid: grid,
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dataZoom: dataZoom(0),
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yAxis: [
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{
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type: "value",
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name: "Price (USD)",
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nameGap: 30,
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nameLocation: "middle",
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nameTextStyle: textStyleMain,
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position: "left",
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alignTicks: true,
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axisTick: axisTick,
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axisLine: axisLine,
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splitLine: {
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show: false,
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},
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axisLabel: {
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...axisLabel,
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formatter(value, index) {
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return nFormatter(value, 0);
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},
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},
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},
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],
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series: [
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{
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type: "line",
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name: "Price (USD)",
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data: dataArr.map((row) => row.price),
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},
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],
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};
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myChart.setOption(option);
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}
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document.addEventListener("DOMContentLoaded", function () {
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let periodIndex = 2;
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periodDropdown(periods, periodIndex);
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fetchDataForChart(periods[periodIndex]);
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const selectElement = document.getElementById("select-period-dropdown");
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selectElement.addEventListener("change", function (event) {
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const selectedValue = event.target.value;
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fetchDataForChart(selectedValue);
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});
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});
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