64 lines
1.6 KiB
JavaScript
64 lines
1.6 KiB
JavaScript
function hex2Array(hex) {
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//16进制字符串转字节数组
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var result = [];
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if (hex.length % 2 == 1) hex = '0' + hex
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for (var i = 0; i < hex.length; i += 2) {
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result.push(parseInt(hex.substring(i, i + 2), 16));
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}
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result = Uint8Array.from(result)
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return result.buffer
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}
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function array2Hex(value) {
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//value类型为 ArrayBuffer
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let arr = new Uint8Array(value)
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var hex = Buffer.from(arr).toString('hex').toUpperCase()
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return hex
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}
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function string2Array(str) {
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//value类型为 ArrayBuffer
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let arr = new Uint8Array(str.length)
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for (var i = 0; i < str.length; i++) {
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arr[i] = str.charCodeAt(i)
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}
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return arr.buffer
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}
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function array2String(value) {
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//value类型为 ArrayBuffer
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let arr = new Uint8Array(value)
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var str = String.fromCharCode.apply(null, arr)
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console.error('str=[' + str + ']')
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return str
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}
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function formatDate(fmt, date) {
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let ret;
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const opt = {
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"y+": date.getFullYear().toString(), // 年
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"M+": (date.getMonth() + 1).toString(), // 月
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"d+": date.getDate().toString(), // 日
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"H+": date.getHours().toString(), // 时
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"m+": date.getMinutes().toString(), // 分
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"s+": date.getSeconds().toString(), // 秒
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"S+": date.getMilliseconds().toString() // 毫秒
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// 有其他格式化字符需求可以继续添加，必须转化成字符串
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};
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for (let k in opt) {
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ret = new RegExp("(" + k + ")").exec(fmt);
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if (ret) {
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fmt = fmt.replace(ret[1], (ret[1].length == 1) ? (opt[k]) : (opt[k].padStart(ret[1].length, "0")))
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};
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};
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return fmt;
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}
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module.exports = {
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hex2Array: hex2Array,
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array2Hex: array2Hex,
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string2Array: string2Array,
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array2String: array2String,
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formatDate: formatDate
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}
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