41 lines
1.3 KiB
HTML
41 lines
1.3 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta http-equiv="X-UA-Compatible" content="IE=edge" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>Document</title>
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</head>
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<body>
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<select id="selProvince"></select>
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<script>
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// 你无须知道该函数是如何实现的！！！
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// 调用该函数，会远程加载省份数据
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// 函数返回一个Promise，成功后得到省份数组，失败时会给予失败原因
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function getProvinces() {
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return fetch('https://study.duyiedu.com/api/citylist')
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.then((resp) => resp.json())
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.then((resp) => resp.data)
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.then((resp) =>
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resp.map((it) => ({ value: it.value, label: it.label }))
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);
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}
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// 利用getProvinces函数，将省份数据加载到select元素中
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getProvinces().then(
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(ps) => {
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const html = ps
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.map((p) => `<option value="${p.value}">${p.label}</option>`)
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.join('');
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const selProvince = document.getElementById('selProvince');
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selProvince.innerHTML = html;
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},
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(reason) => {
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console.log(reason);
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}
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);
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</script>
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</body>
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</html>
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