| | |
| | | * @param {string} url |
| | | * @returns {Object} |
| | | */ |
| | | export function getQueryObject(url) { |
| | | url = url == null ? window.location.href : url |
| | | const search = url.substring(url.lastIndexOf('?') + 1) |
| | | const obj = {} |
| | | const reg = /([^?&=]+)=([^?&=]*)/g |
| | | search.replace(reg, (rs, $1, $2) => { |
| | | const name = decodeURIComponent($1) |
| | | let val = decodeURIComponent($2) |
| | | val = String(val) |
| | | obj[name] = val |
| | | return rs |
| | | }) |
| | | return obj |
| | | } |
| | | |
| | | /** |
| | | * @param {string} input value |
| | | * @returns {number} output value |
| | | */ |
| | | export function byteLength(str) { |
| | | // returns the byte length of an utf8 string |
| | | let s = str.length |
| | | for (var i = str.length - 1; i >= 0; i--) { |
| | | const code = str.charCodeAt(i) |
| | | if (code > 0x7f && code <= 0x7ff) s++ |
| | | else if (code > 0x7ff && code <= 0xffff) s += 2 |
| | | if (code >= 0xDC00 && code <= 0xDFFF) i-- |
| | | } |
| | | return s |
| | | } |
| | | |
| | | /** |
| | | * @param {Array} actual |
| | | * @returns {Array} |
| | | */ |
| | | export function cleanArray(actual) { |
| | | const newArray = [] |
| | | for (let i = 0; i < actual.length; i++) { |
| | | if (actual[i]) { |
| | | newArray.push(actual[i]) |
| | | } |
| | | } |
| | | return newArray |
| | | } |
| | | |
| | | /** |
| | | * @param {Object} json |
| | | * @returns {Array} |
| | | */ |
| | | export function param(json) { |
| | | if (!json) return '' |
| | | return cleanArray( |
| | | Object.keys(json).map(key => { |
| | | if (json[key] === undefined) return '' |
| | | return encodeURIComponent(key) + '=' + encodeURIComponent(json[key]) |
| | | }) |
| | | ).join('&') |
| | | } |
| | | |
| | | /** |
| | | * @param {string} url |
| | | * @returns {Object} |
| | | */ |
| | | export function param2Obj(url) { |
| | | const search = decodeURIComponent(url.split('?')[1]).replace(/\+/g, ' ') |
| | | if (!search) { |
| | |
| | | }) |
| | | return obj |
| | | } |
| | | |
| | | /** |
| | | * @param {string} val |
| | | * @returns {string} |
| | | */ |
| | | export function html2Text(val) { |
| | | const div = document.createElement('div') |
| | | div.innerHTML = val |
| | | return div.textContent || div.innerText |
| | | } |
| | | |
| | | /** |
| | | * Merges two objects, giving the last one precedence |
| | | * @param {Object} target |
| | | * @param {(Object|Array)} source |
| | | * @returns {Object} |
| | | */ |
| | | export function objectMerge(target, source) { |
| | | if (typeof target !== 'object') { |
| | | target = {} |
| | | } |
| | | if (Array.isArray(source)) { |
| | | return source.slice() |
| | | } |
| | | Object.keys(source).forEach(property => { |
| | | const sourceProperty = source[property] |
| | | if (typeof sourceProperty === 'object') { |
| | | target[property] = objectMerge(target[property], sourceProperty) |
| | | } else { |
| | | target[property] = sourceProperty |
| | | } |
| | | }) |
| | | return target |
| | | } |
| | | |
| | | /** |
| | | * @param {HTMLElement} element |
| | | * @param {string} className |
| | | */ |
| | | export function toggleClass(element, className) { |
| | | if (!element || !className) { |
| | | return |
| | | } |
| | | let classString = element.className |
| | | const nameIndex = classString.indexOf(className) |
| | | if (nameIndex === -1) { |
| | | classString += '' + className |
| | | } else { |
| | | classString = |
| | | classString.substr(0, nameIndex) + |
| | | classString.substr(nameIndex + className.length) |
| | | } |
| | | element.className = classString |
| | | } |
| | | |
| | | /** |
| | | * @param {string} type |
| | | * @returns {Date} |
| | | */ |
| | | export function getTime(type) { |
| | | if (type === 'start') { |
| | | return new Date().getTime() - 3600 * 1000 * 24 * 90 |
| | | } else { |
| | | return new Date(new Date().toDateString()) |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * @param {Function} func |
| | | * @param {number} wait |
| | | * @param {boolean} immediate |
| | | * @return {*} |
| | | */ |
| | | export function debounce(func, wait, immediate) { |
| | | let timeout, args, context, timestamp, result |
| | | |
| | | const later = function() { |
| | | // 据上一次触发时间间隔 |
| | | const last = +new Date() - timestamp |
| | | |
| | | // 上次被包装函数被调用时间间隔 last 小于设定时间间隔 wait |
| | | if (last < wait && last > 0) { |
| | | timeout = setTimeout(later, wait - last) |
| | | } else { |
| | | timeout = null |
| | | // 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 |
| | | if (!immediate) { |
| | | result = func.apply(context, args) |
| | | if (!timeout) context = args = null |
| | | } |
| | | } |
| | | } |
| | | |
| | | return function(...args) { |
| | | context = this |
| | | timestamp = +new Date() |
| | | const callNow = immediate && !timeout |
| | | // 如果延时不存在,重新设定延时 |
| | | if (!timeout) timeout = setTimeout(later, wait) |
| | | if (callNow) { |
| | | result = func.apply(context, args) |
| | | context = args = null |
| | | } |
| | | |
| | | return result |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * This is just a simple version of deep copy |
| | | * Has a lot of edge cases bug |
| | | * If you want to use a perfect deep copy, use lodash's _.cloneDeep |
| | | * @param {Object} source |
| | | * @returns {Object} |
| | | */ |
| | | export function deepClone(source) { |
| | | if (!source && typeof source !== 'object') { |
| | | throw new Error('error arguments', 'deepClone') |
| | | } |
| | | const targetObj = source.constructor === Array ? [] : {} |
| | | Object.keys(source).forEach(keys => { |
| | | if (source[keys] && typeof source[keys] === 'object') { |
| | | targetObj[keys] = deepClone(source[keys]) |
| | | } else { |
| | | targetObj[keys] = source[keys] |
| | | } |
| | | }) |
| | | return targetObj |
| | | } |
| | | |
| | | /** |
| | | * @param {Array} arr |
| | | * @returns {Array} |
| | | */ |
| | | export function uniqueArr(arr) { |
| | | return Array.from(new Set(arr)) |
| | | } |
| | | |
| | | /** |
| | | * @returns {string} |
| | | */ |
| | | export function createUniqueString() { |
| | | const timestamp = +new Date() + '' |
| | | const randomNum = parseInt((1 + Math.random()) * 65536) + '' |
| | | return (+(randomNum + timestamp)).toString(32) |
| | | } |
| | | |
| | | /** |
| | | * Check if an element has a class |
| | | * @param {HTMLElement} elm |
| | | * @param {string} cls |
| | | * @returns {boolean} |
| | | */ |
| | | export function hasClass(ele, cls) { |
| | | return !!ele.className.match(new RegExp('(\\s|^)' + cls + '(\\s|$)')) |
| | | } |
| | | |
| | | /** |
| | | * Add class to element |
| | | * @param {HTMLElement} elm |
| | | * @param {string} cls |
| | | */ |
| | | export function addClass(ele, cls) { |
| | | if (!hasClass(ele, cls)) ele.className += ' ' + cls |
| | | } |
| | | |
| | | /** |
| | | * Remove class from element |
| | | * @param {HTMLElement} elm |
| | | * @param {string} cls |
| | | */ |
| | | export function removeClass(ele, cls) { |
| | | if (hasClass(ele, cls)) { |
| | | const reg = new RegExp('(\\s|^)' + cls + '(\\s|$)') |
| | | ele.className = ele.className.replace(reg, ' ') |
| | | } |
| | | } |