88 lines
2.1 KiB
HTML
88 lines
2.1 KiB
HTML
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>成都机动车限行查询</title>
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<style>
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#search {
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width: 640px;
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margin: 0 auto;
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text-align: center;
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margin-top: 150px;
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}
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#carno {
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display: inline-block;
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width: 460px;
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height: 36px;
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font: 36px/36px arial;
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text-align: center;
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vertical-align: middle;
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border: none;
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outline: none;
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border-bottom: 1px dotted darkgray;
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}
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#search input[type=button] {
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width: 80px;
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height: 36px;
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font: 28px/36px arial;
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border: none;
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color: white;
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background-color: red;
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vertical-align: middle;
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}
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#result {
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width: 640px;
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margin: 0 auto;
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text-align: center;
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font: 32px/36px arial;
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}
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</style>
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</head>
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<body>
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<div id="search">
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<input type="text" id="carno" placeholder="请输入车牌号">
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<input type="button" value="查询" onclick="showResult()">
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<input type="button" value="清除" onclick="clearResult()">
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</div>
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<hr>
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<p id="result"></p>
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<script>
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const carnoInput = document.getElementById('carno')
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const result = document.getElementById('result')
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const pattern = /^[京津沪渝辽吉黑冀鲁豫晋陕甘闽粤桂川云贵苏浙皖湘鄂赣青新宁蒙藏琼][A-Z]\s*[0-9A-Z]{5}$/i
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function clearResult() {
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carnoInput.value = ''
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result.textContent = ''
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}
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function showResult() {
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let carno = carnoInput.value.trim()
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if (pattern.test(carno)) {
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let num = getLastDigit(carno)
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if (num) {
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let day = new Date().getDay()
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if (day == 0 || day == 6) {
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result.textContent = '节假日不限行'
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} else if (num % 5 == day || num % 5 == day - 5) {
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result.textContent = carno + '今日限行'
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} else {
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result.textContent = carno + '今日不限行'
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}
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return
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}
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}
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alert('请输入有效的车牌号')
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}
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function getLastDigit(carno) {
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let len = carno.length
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for (let i = len - 1; i >= len - 5; i -= 1) {
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if ('0' <= carno[i] && carno[i] <= '9') {
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return parseInt(carno[i])
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}
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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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