index.html 处理 json 文件不存在情况
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@ -84,7 +84,7 @@
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<input type="checkbox" class="filter_checkbox" name="auto_refresh" id="auto_refresh">自动拉取<span
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id="auto_refresh_countdown"></span>
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</label>
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<span id="update-finish-info" style="color: green; font-weight: bold; display: none;">数据已更新</span>
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<span id="update-finish-info" style="color: green; font-weight: bold; display: none;">拉取成功,数据已更新</span>
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<table id="list"></table>
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<script>
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/**
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@ -167,7 +167,7 @@
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// 绑定复选框改变事件
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for (let i = 0; i < filterCheckbox.length; i++) {
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console.log(filterCheckbox[i]);
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// console.log(filterCheckbox[i]);
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filterCheckbox[i].onchange = function () {
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render();
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};
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@ -200,7 +200,7 @@
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// 根据屏幕判断要显示哪些字段
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// 此时还未拉取数据,所以进入 render 函数会直接返回,不会多次渲染
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let initWidth = document.body.offsetWidth;
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console.log(initWidth);
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// console.log(initWidth);
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if (initWidth < 400) {
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btnShowNone.click();
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btnShowNone.innerHTML += "(默认)";
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@ -226,8 +226,18 @@
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xhr.open("GET", "../data/latest.json?t=" + Date.now(), true);
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xhr.send();
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xhr.onreadystatechange = function () {
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if (xhr.readyState == 4 && xhr.status == 200) {
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if (xhr.readyState !== 4) return;
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if (xhr.status == 200) {
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try {
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hotBandData = JSON.parse(xhr.responseText);
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if (!hotBandData.data || typeof hotBandData.data !== 'object')
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throw new Error("data is undefined or not an object");
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} catch (e) {
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console.error("[error]", "\n", e, "\n", "\n", "[xhr.responseText]", "\n", xhr.responseText);
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alert("latest.json 文件解析失败,请检查文件");
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return;
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}
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console.log(hotBandData);
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// 更新时间
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@ -237,6 +247,8 @@
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// 渲染榜单
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render();
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} else if (xhr.status == 404) {
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alert("data 目录下未找到 latest.json 文件,可能的原因:\n您还没有运行脚本拉取数据,请先运行脚本,然后刷新页面");
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}
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}
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}
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