/**
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* Created by PanJiaChen on 16/11/18.
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*/
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/**
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* Parse the time to string
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* @param {(Object|string|number)} time
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* @param {string} cFormat
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* @returns {string | null}
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*/
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export function parseTime(time, cFormat) {
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if (arguments.length === 0 || !time) {
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return null;
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}
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const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}';
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let date;
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if (typeof time === 'object') {
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date = time;
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} else {
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if ((typeof time === 'string')) {
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if ((/^[0-9]+$/.test(time))) {
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// support "1548221490638"
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time = parseInt(time);
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} else {
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// support safari
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// https://stackoverflow.com/questions/4310953/invalid-date-in-safari
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time = time.replace(new RegExp(/-/gm), '/');
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}
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}
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if ((typeof time === 'number') && (time.toString().length === 10)) {
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time = time * 1000;
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}
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date = new Date(time);
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}
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const formatObj = {
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y: date.getFullYear(),
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m: date.getMonth() + 1,
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d: date.getDate(),
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h: date.getHours(),
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i: date.getMinutes(),
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s: date.getSeconds(),
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a: date.getDay()
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};
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const time_str = format.replace(/{([ymdhisa])+}/g, (result, key) => {
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const value = formatObj[key];
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// Note: getDay() returns 0 on Sunday
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if (key === 'a') { return ['日', '一', '二', '三', '四', '五', '六'][value]; }
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return value.toString().padStart(2, '0');
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});
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return time_str;
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}
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/**
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* @param {number} time
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* @param {string} option
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* @returns {string}
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*/
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export function formatTime(time, option) {
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if (('' + time).length === 10) {
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time = parseInt(time) * 1000;
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} else {
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time = +time;
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}
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const d = new Date(time);
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const now = Date.now();
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const diff = (now - d.getTime()) / 1000;
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if (diff < 30) {
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return '刚刚';
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} else if (diff < 3600) {
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// less 1 hour
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return Math.ceil(diff / 60) + '分钟前';
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} else if (diff < 3600 * 24) {
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return Math.ceil(diff / 3600) + '小时前';
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} else if (diff < 3600 * 24 * 2) {
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return '1天前';
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}
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if (option) {
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return parseTime(time, option);
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} else {
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return (
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d.getMonth() +
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1 +
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'月' +
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d.getDate() +
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'日' +
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d.getHours() +
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'时' +
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d.getMinutes() +
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'分'
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);
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}
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}
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/**
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* @param {string} url
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* @returns {Object}
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*/
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export function getQueryObject(url) {
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url = url == null ? window.location.href : url;
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const search = url.substring(url.lastIndexOf('?') + 1);
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const obj = {};
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const reg = /([^?&=]+)=([^?&=]*)/g;
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search.replace(reg, (rs, $1, $2) => {
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const name = decodeURIComponent($1);
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let val = decodeURIComponent($2);
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val = String(val);
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obj[name] = val;
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return rs;
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});
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return obj;
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}
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/**
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* @param {string} input value
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* @returns {number} output value
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*/
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export function byteLength(str) {
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// returns the byte length of an utf8 string
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let s = str.length;
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for (let i = str.length - 1; i >= 0; i--) {
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const code = str.charCodeAt(i);
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if (code > 0x7f && code <= 0x7ff) s++;
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else if (code > 0x7ff && code <= 0xffff) s += 2;
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if (code >= 0xDC00 && code <= 0xDFFF) i--;
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}
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return s;
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}
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/**
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* @param {Array} actual
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* @returns {Array}
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*/
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export function cleanArray(actual) {
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const newArray = [];
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for (let i = 0; i < actual.length; i++) {
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if (actual[i]) {
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newArray.push(actual[i]);
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}
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}
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return newArray;
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}
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/**
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* @param {Object} json
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* @returns {Array}
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*/
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export function param(json) {
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if (!json) return '';
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return cleanArray(
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Object.keys(json).map(key => {
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if (json[key] === undefined) return '';
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return encodeURIComponent(key) + '=' + encodeURIComponent(json[key]);
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})
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).join('&');
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}
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/**
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* @param {string} url
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* @returns {Object}
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*/
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export function param2Obj(url) {
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const search = decodeURIComponent(url.split('?')[1]).replace(/\+/g, ' ');
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if (!search) {
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return {};
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}
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const obj = {};
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const searchArr = search.split('&');
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searchArr.forEach(v => {
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const index = v.indexOf('=');
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if (index !== -1) {
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const name = v.substring(0, index);
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const val = v.substring(index + 1, v.length);
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obj[name] = val;
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}
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});
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return obj;
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}
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/**
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* @param {string} val
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* @returns {string}
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*/
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export function html2Text(val) {
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const div = document.createElement('div');
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div.innerHTML = val;
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return div.textContent || div.innerText;
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}
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/**
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* Merges two objects, giving the last one precedence
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* @param {Object} target
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* @param {(Object|Array)} source
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* @returns {Object}
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*/
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export function objectMerge(target, source) {
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if (typeof target !== 'object') {
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target = {};
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}
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if (Array.isArray(source)) {
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return source.slice();
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}
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Object.keys(source).forEach(property => {
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const sourceProperty = source[property];
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if (typeof sourceProperty === 'object') {
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target[property] = objectMerge(target[property], sourceProperty);
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} else {
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target[property] = sourceProperty;
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}
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});
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return target;
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}
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/**
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* @param {HTMLElement} element
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* @param {string} className
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*/
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export function toggleClass(element, className) {
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if (!element || !className) {
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return;
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}
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let classString = element.className;
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const nameIndex = classString.indexOf(className);
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if (nameIndex === -1) {
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classString += '' + className;
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} else {
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classString =
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classString.substr(0, nameIndex) +
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classString.substr(nameIndex + className.length);
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}
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element.className = classString;
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}
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/**
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* @param {string} type
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* @returns {Date}
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*/
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export function getTime(type) {
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if (type === 'start') {
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return new Date().getTime() - 3600 * 1000 * 24 * 90;
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} else {
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return new Date(new Date().toDateString());
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}
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}
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/**
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* @param {Function} func
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* @param {number} wait
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* @param {boolean} immediate
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* @return {*}
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*/
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export function debounce(func, wait, immediate) {
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let timeout, args, context, timestamp, result;
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const later = function() {
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// 据上一次触发时间间隔
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const last = +new Date() - timestamp;
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// 上次被包装函数被调用时间间隔 last 小于设定时间间隔 wait
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if (last < wait && last > 0) {
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timeout = setTimeout(later, wait - last);
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} else {
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timeout = null;
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// 如果设定为immediate===true，因为开始边界已经调用过了此处无需调用
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if (!immediate) {
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result = func.apply(context, args);
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if (!timeout) context = args = null;
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}
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}
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};
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return function(...args) {
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// eslint-disable-next-line @typescript-eslint/no-this-alias
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context = this;
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timestamp = +new Date();
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const callNow = immediate && !timeout;
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// 如果延时不存在，重新设定延时
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if (!timeout) timeout = setTimeout(later, wait);
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if (callNow) {
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result = func.apply(context, args);
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context = args = null;
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}
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return result;
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};
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}
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/**
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* This is just a simple version of deep copy
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* Has a lot of edge cases bug
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* If you want to use a perfect deep copy, use lodash's _.cloneDeep
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* @param {Object} source
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* @returns {Object}
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*/
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export function deepClone(source) {
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if (!source && typeof source !== 'object') {
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throw new Error('error arguments deepClone');
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}
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const targetObj = source.constructor === Array ? [] : {};
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Object.keys(source).forEach(keys => {
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if (source[keys] && typeof source[keys] === 'object') {
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targetObj[keys] = deepClone(source[keys]);
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} else {
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targetObj[keys] = source[keys];
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}
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});
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return targetObj;
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}
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/**
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* @param {Array} arr
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* @returns {Array}
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*/
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export function uniqueArr(arr) {
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return Array.from(new Set(arr));
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}
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/**
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* @returns {string}
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*/
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export function createUniqueString() {
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const timestamp = +new Date() + '';
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const randomNum = parseInt((1 + Math.random()) * 65536 + '') + '';
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return (+(randomNum + timestamp)).toString(32);
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}
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/**
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* Check if an element has a class
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* @param {HTMLElement} elm
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* @param {string} cls
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* @returns {boolean}
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*/
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export function hasClass(ele, cls) {
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return !!ele.className.match(new RegExp('(\\s|^)' + cls + '(\\s|$)'));
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}
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/**
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* Add class to element
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* @param {HTMLElement} elm
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* @param {string} cls
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*/
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export function addClass(ele, cls) {
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if (!hasClass(ele, cls)) ele.className += ' ' + cls;
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}
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/**
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* Remove class from element
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* @param {HTMLElement} elm
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* @param {string} cls
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*/
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export function removeClass(ele, cls) {
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if (hasClass(ele, cls)) {
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const reg = new RegExp('(\\s|^)' + cls + '(\\s|$)');
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ele.className = ele.className.replace(reg, ' ');
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}
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}
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