JavaScript可以做很多出色的事情,本篇文章给大家整理50+个实用工具函数,可以帮助你提高工作效率并可以帮助调试代码!!
1、isStatic: 检测数据是不是除了symbol外的原始数据。【相关推荐:javascript学习教程】
function isStatic(value) { return ( typeof value === 'string' || typeof value === 'number' || typeof value === 'boolean' || typeof value === 'undefined' || value === null ) }
2、isPrimitive:检测数据是不是原始数据
function isPrimitive(value) { return isStatic(value) || typeof value === 'symbol' }
3、isObject:判断数据是不是引用类型的数据(例如:array,function,object,regexe,new Number(),new String())
function isObject(value) { let type = typeof value; return value != null && (type == 'object' || type == 'function'); }
4、isObjectLike:检查value是否是类对象。如果一个值是类对象,那么它不应该是null,而且typeof后的结果是“object”。
function isObjectLike(value) { return value != null && typeof value == 'object'; }
5、getRawType:获取数据类型,返回结果为Number、String、Object、Array等
function getRawType(value) { return Object.prototype.toString.call(value).slice(8, -1) } // getoRawType([]) ⇒ Array
6、isPlainObject:判断数据是不是Object类型的数据
function isPlainObject(obj) { return Object.prototype.toString.call(obj) === '[object Object]' }
7、isArray:判断数据是不是数组类型的数据(Array.isArray的兼容写法)
function isArray(arr) { return Object.prototype.toString.call(arr) === '[object Array]' } // 将isArray挂载到Array上 Array.isArray = Array.isArray || isArray;
8、isRegExp:判断数据是不是正则对象
function isRegExp(value) { return Object.prototype.toString.call(value) === '[object RegExp]' }
9、isDate:判断数据是不是时间对象
function isDate(value) { return Object.prototype.toString.call(value) === '[object Date]' }
10、isNative:判断value是不是浏览器内置函数
内置函数toString后的主体代码块为[native code] ,而非内置函数则为相关代码,所以非内置函数可以进行拷贝(toString后掐头去尾再由Function转)
function isNative(value) { return typeof value === 'function' && /native code/.test(value.toString()) }
11、isFunction:检查value是不是函数
function isFunction(value) { return Object.prototype.toString.call(value) === '[object Function]' }
12、isLength:检查value是否为有效的类数组长度
function isLength(value) { return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= Number.MAX_SAFE_INTEGER; }
13、isArrayLike:检查value是否是类数组
如果一个值被认为是类数组,那么它不是一个函数,并且value.length是个整数,大于等于0,小于或等于Number.MAX_SAFE_INTEGER。这里字符串也被当作类数组。
function isArrayLike(value) { return value != null && isLength(value.length) && !isFunction(value); }
14、isEmpty:检查value是否为空
如果是null,直接返回true;如果是类数组,判断数据长度;如果是Object对象,判断是否具有属性;如果是其他数据,直接返回false(也可以改为返回true)
function isEmpty(value) { if (value == null) { return true; } if (isArrayLike(value)) { return !value.length; } else if (isPlainObject(value)) { for (let key in value) { if (hasOwnProperty.call(value, key)) { return false; } } } return false; }
15、cached:记忆函数:缓存函数的运算结果
function cached(fn) { let cache = Object.create(null); return function cachedFn(str) { let hit = cache[str]; return hit || (cache[str] = fn(str)) } }
16、camelize:横线转驼峰命名
let camelizeRE = /-(\w)/g; function camelize(str) { return str.replace(camelizeRE, function(_, c) { return c ? c.toUpperCase() : ''; }) } //ab-cd-ef ==> abCdEf //使用记忆函数 let _camelize = cached(camelize)
17、hyphenate:驼峰命名转横线命名:拆分字符串,使用-相连,并且转换为小写
let hyphenateRE = /\B([A-Z])/g; function hyphenate(str){ return str.replace(hyphenateRE, '-$1').toLowerCase() } //abCd ==> ab-cd //使用记忆函数 let _hyphenate = cached(hyphenate);
18、capitalize:字符串首位大写
function capitalize(str) { return str.charAt(0).toUpperCase() + str.slice(1) } // abc ==> Abc //使用记忆函数 let _capitalize = cached(capitalize)
19、extend:将属性混合到目标对象中
function extend(to, _form) { for(let key in _form) { to[key] = _form[key]; } return to }
20、Object.assign:对象属性复制,浅拷贝
Object.assign = Object.assign || function() { if (arguments.length == 0) throw new TypeError('Cannot convert undefined or null to object'); let target = arguments[0], args = Array.prototype.slice.call(arguments, 1), key; args.forEach(function(item) { for (key in item) { item.hasOwnProperty(key) && (target[key] = item[key]) } }) return target }
使用Object.assign可以钱克隆一个对象:
let clone = Object.assign({}, target);
简单的深克隆可以使用JSON.parse()和JSON.stringify(),这两个api是解析json数据的,所以只能解析除symbol外的原始类型及数组和对象。
let clone = JSON.parse( JSON.stringify(target) )
21、clone:克隆数据,可深度克隆
这里列出了原始类型,时间、正则、错误、数组、对象的克隆规则,其他的可自行补充
function clone(value, deep) { if (isPrimitive(value)) { return value } if (isArrayLike(value)) { //是类数组 value = Array.prototype.slice.call(vall) return value.map(item => deep ? clone(item, deep) : item) } else if (isPlainObject(value)) { //是对象 let target = {}, key; for (key in value) { value.hasOwnProperty(key) && ( target[key] = deep ? clone(value[key], value[key] )) } } let type = getRawType(value); switch(type) { case 'Date': case 'RegExp': case 'Error': value = new window[type](value); break; } return value }
22、识别各种浏览器及平台
//运行环境是浏览器 let inBrowser = typeof window !== 'undefined'; //运行环境是微信 let inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform; let weexPlatform = inWeex && WXEnvironment.platform.toLowerCase(); //浏览器 UA 判断 let UA = inBrowser && window.navigator.userAgent.toLowerCase(); let isIE = UA && /msie|trident/.test(UA); let isIE9 = UA && UA.indexOf('msie 9.0') > 0; let isEdge = UA && UA.indexOf('edge/') > 0; let isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android'); let isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios'); let isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge;
23、getExplorerInfo:获取浏览器信息
function getExplorerInfo() { let t = navigator.userAgent.toLowerCase(); return 0 <= t.indexOf("msie") ? { //ie < 11 type: "IE", version: Number(t.match(/msie ([\d]+)/)[1]) } : !!t.match(/trident\/.+?rv:(([\d.]+))/) ? { // ie 11 type: "IE", version: 11 } : 0 <= t.indexOf("edge") ? { type: "Edge", version: Number(t.match(/edge\/([\d]+)/)[1]) } : 0 <= t.indexOf("firefox") ? { type: "Firefox", version: Number(t.match(/firefox\/([\d]+)/)[1]) } : 0 <= t.indexOf("chrome") ? { type: "Chrome", version: Number(t.match(/chrome\/([\d]+)/)[1]) } : 0 <= t.indexOf("opera") ? { type: "Opera", version: Number(t.match(/opera.([\d]+)/)[1]) } : 0 <= t.indexOf("Safari") ? { type: "Safari", version: Number(t.match(/version\/([\d]+)/)[1]) } : { type: t, version: -1 } }
24、isPCBroswer:检测是否为PC端浏览器模式
function isPCBroswer() { let e = navigator.userAgent.toLowerCase() , t = "ipad" == e.match(/ipad/i) , i = "iphone" == e.match(/iphone/i) , r = "midp" == e.match(/midp/i) , n = "rv:1.2.3.4" == e.match(/rv:1.2.3.4/i) , a = "ucweb" == e.match(/ucweb/i) , o = "android" == e.match(/android/i) , s = "windows ce" == e.match(/windows ce/i) , l = "windows mobile" == e.match(/windows mobile/i); return !(t || i || r || n || a || o || s || l) }
25、unique: 数组去重,返回一个新数组
function unique(arr){ if(!isArrayLink(arr)){ //不是类数组对象 return arr } let result = [] let objarr = [] let obj = Object.create(null) arr.forEach(item => { if(isStatic(item)){//是除了symbol外的原始数据 let key = item + '_' + getRawType(item); if(!obj[key]){ obj[key] = true result.push(item) } }else{//引用类型及symbol if(!objarr.includes(item)){ objarr.push(item) result.push(item) } } }) return resulte }
26、Set简单实现
window.Set = window.Set || (function () { function Set(arr) { this.items = arr ? unique(arr) : []; this.size = this.items.length; // Array的大小 } Set.prototype = { add: function (value) { // 添加元素,若元素已存在,则跳过,返回 Set 结构本身。 if (!this.has(value)) { this.items.push(value); this.size++; } return this; }, clear: function () { //清除所有成员,没有返回值。 this.items = [] this.size = 0 }, delete: function (value) { //删除某个值,返回一个布尔值,表示删除是否成功。 return this.items.some((v, i) => { if(v === value){ this.items.splice(i,1) return true } return false }) }, has: function (value) { //返回一个布尔值,表示该值是否为Set的成员。 return this.items.some(v => v === value) }, values: function () { return this.items }, } return Set; }());
27、repeat:生成一个重复的字符串,有n个str组成,可修改为填充为数组等
function repeat(str, n) { let res = ''; while(n) { if(n % 2 === 1) { res += str; } if(n > 1) { str += str; } n >>= 1; } return res }; //repeat('123',3) ==> 123123123
28、dateFormater:格式化时间
function dateFormater(formater, t){ let date = t ? new Date(t) : new Date(), Y = date.getFullYear() + '', M = date.getMonth() + 1, D = date.getDate(), H = date.getHours(), m = date.getMinutes(), s = date.getSeconds(); return formater.replace(/YYYY|yyyy/g,Y) .replace(/YY|yy/g,Y.substr(2,2)) .replace(/MM/g,(M<10?'0':'') + M) .replace(/DD/g,(D<10?'0':'') + D) .replace(/HH|hh/g,(H<10?'0':'') + H) .replace(/mm/g,(m<10?'0':'') + m) .replace(/ss/g,(s<10?'0':'') + s) } // dateFormater('YYYY-MM-DD HH:mm', t) ==> 2019-06-26 18:30 // dateFormater('YYYYMMDDHHmm', t) ==> 201906261830
29、dateStrForma:将指定字符串由一种时间格式转化为另一种。From的格式应对应str的位置
function dateStrForma(str, from, to){ //'20190626' 'YYYYMMDD' 'YYYY年MM月DD日' str += '' let Y = '' if(~(Y = from.indexOf('YYYY'))){ Y = str.substr(Y, 4) to = to.replace(/YYYY|yyyy/g,Y) }else if(~(Y = from.indexOf('YY'))){ Y = str.substr(Y, 2) to = to.replace(/YY|yy/g,Y) } let k,i ['M','D','H','h','m','s'].forEach(s =>{ i = from.indexOf(s+s) k = ~i ? str.substr(i, 2) : '' to = to.replace(s+s, k) }) return to } // dateStrForma('20190626', 'YYYYMMDD', 'YYYY年MM月DD日') ==> 2019年06月26日 // dateStrForma('121220190626', '----YYYYMMDD', 'YYYY年MM月DD日') ==> 2019年06月26日 // dateStrForma('2019年06月26日', 'YYYY年MM月DD日', 'YYYYMMDD') ==> 20190626 // 一般的也可以使用正则来实现 //'2019年06月26日'.replace(/(\d{4})年(\d{2})月(\d{2})日/, '$1-$2-$3') ==> 2019-06-26
30、getPropByPath:根据字符串路径获取对象属性:‘obj[0].count’
function getPropByPath(obj, path, strict) { let tempObj = obj; path = path.replace(/\[(\w+)\]/g, '.$1'); //将[0]转化为.0 path = path.replace(/^\./, ''); //去除开头的. let keyArr = path.split('.'); //根据.切割 let i = 0; for (let len = keyArr.length; i < len - 1; ++i) { if (!tempObj && !strict) break; let key = keyArr[i]; if (key in tempObj) { tempObj = tempObj[key]; } else { if (strict) {//开启严格模式,没找到对应key值,抛出错误 throw new Error('please transfer a valid prop path to form item!'); } break; } } return { o: tempObj, //原始数据 k: keyArr[i], //key值 v: tempObj ? tempObj[keyArr[i]] : null // key值对应的值 }; };
31、GetUrlParam:获取Url参数,返回一个对象
function GetUrlParam(){ let url = document.location.toString(); let arrObj = url.split("?"); let params = Object.create(null) if (arrObj.length > 1){ arrObj = arrObj[1].split("&"); arrObj.forEach(item=>{ item = item.split("="); params[item[0]] = item[1] }) } return params; } // ?a=1&b=2&c=3 ==> {a: "1", b: "2", c: "3"}
32、downloadFile:base64数据导出文件,文件下载
function downloadFile(filename, data) { let DownloadLink = document.createElement('a'); if (DownloadLink) { document.body.appendChild(DownloadLink); DownloadLink.style = 'display: none'; DownloadLink.download = filename; DownloadLink.href = data; if (document.createEvent) { let DownloadEvt = document.createEvent('MouseEvents'); DownloadEvt.initEvent('click', true, false); DownloadLink.dispatchEvent(DownloadEvt); } else if (document.createEventObject) { DownloadLink.fireEvent('onclick'); } else if (typeof DownloadLink.onclick == 'function') { DownloadLink.onclick(); } document.body.removeChild(DownloadLink); } }
33、toFullScreen:全屏
function toFullScreen() { let elem = document.body; elem.webkitRequestFullScreen ? elem.webkitRequestFullScreen() : elem.mozRequestFullScreen ? elem.mozRequestFullScreen() : elem.msRequestFullscreen ? elem.msRequestFullscreen() : elem.requestFullScreen ? elem.requestFullScreen() : alert("浏览器不支持全屏"); }
34、exitFullscreen:退出全屏
function exitFullscreen() { let elem = parent.document; elem.webkitCancelFullScreen ? elem.webkitCancelFullScreen() : elem.mozCancelFullScreen ? elem.mozCancelFullScreen() : elem.cancelFullScreen ? elem.cancelFullScreen() : elem.msExitFullscreen ? elem.msExitFullscreen() : elem.exitFullscreen ? elem.exitFullscreen() : alert("切换失败,可尝试Esc退出"); }
35、requestAnimationFrame:window动画
window.requestAnimationFrame = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.msRequestAnimationFrame || window.oRequestAnimationFrame || function (callback) { //为了使setTimteout的尽可能的接近每秒60帧的效果 window.setTimeout(callback, 1000 / 60); } window.cancelAnimationFrame = window.cancelAnimationFrame || window.webkitCancelAnimationFrame || window.mozCancelAnimationFrame || window.msCancelAnimationFrame || window.oCancelAnimationFrame || function (id) { //为了使setTimteout的尽可能的接近每秒60帧的效果 window.clearTimeout(id); }
36、_isNaN:检查数据是否是非数字值
function _isNaN(v){ return !(typeof v === 'string' || typeof v === 'number') || isNaN(v) }
37、max:求取数组中非NaN数据中的最大值
function max(arr){ arr = arr.filter(item => !_isNaN(item)) return arr.length ? Math.max.apply(null, arr) : undefined } //max([1, 2, '11', null, 'fdf', []]) ==> 11
38、min:求取数组中非NaN数据中的最小值
function min(arr){ arr = arr.filter(item => !_isNaN(item)) return arr.length ? Math.min.apply(null, arr) : undefined } //min([1, 2, '11', null, 'fdf', []]) ==> 1
39、random:返回一个lower-upper直接的随机数。(lower、upper无论正负与大小,但必须是非NaN的数据)
function random(lower, upper) { lower = +lower || 0 upper = +upper || 0 return Math.random() * (upper - lower) + lower; } //random(0, 0.5) ==> 0.3567039135734613 //random(2, 1) ===> 1.6718418553475423 //random(-2, -1) ==> -1.4474325452361945
40、Object.keys:返回一个由一个给定对象的自身可枚举属性组成的数组
Object.keys = Object.keys || function keys(object) { if (object === null || object === undefined) { throw new TypeError('Cannot convert undefined or null to object'); } let result = []; if (isArrayLike(object) || isPlainObject(object)) { for (let key in object) { object.hasOwnProperty(key) && (result.push(key)) } } return result; }
41、Object.values:返回一个给定对象自身的所有可枚举属性值的数组
Object.values = Object.values || function values(object) { if (object === null || object === undefined) { throw new TypeError('Cannot convert undefined or null to object'); } let result = []; if (isArrayLike(object) || isPlainObject(object)) { for (let key in object) { object.hasOwnProperty(key) && (result.push(object[key])) } } return result; }
42、arr.fill:使用value值填充array,从start位置开始,到end位置结束(但不包含end位置),返回原数组
Array.prototype.fill = Array.prototype.fill || function fill(value, start, end) { let ctx = this let length = ctx.length; start = parseInt(start) if(isNaN(start)){ start = 0 }else if (start < 0) { start = -start > length ? 0 : (length + start); } end = parseInt(end) if(isNaN(end) || end > length){ end = length }else if (end < 0) { end += length; } while (start < end) { ctx[start++] = value; } return ctx; } //Array(3).fill(2) ===> [2, 2, 2]
43、arr.includes:用来判断一个数组是否包含一个指定的值,如果是返回true,否则返回false,可指定开始查询的位置
Array.prototype.includes = Array.prototype.includes || function includes(value, start) { let ctx = this; let length = ctx.length; start = parseInt(start) if(isNaN(start)) { start = 0 } else if (start < 0) { start = -start > length ? 0 : (length + start); } let index = ctx.indexOf(value); return index >= start; }
44、返回数组中通过测试(函数fn内判断)的第一个元素的值
Array.prototype.find = Array.prototype.find || function find(fn, ctx) { ctx = ctx || this; let result; ctx.some((value, index, arr), thisValue) => { return fn(value, index, arr) ? (result = value, true) : false }) return result }
45、arr.findIndex:返回数组中通过测试(函数fn内判断)的第一个元素的下标
Array.prototype.findIndex = Array.prototype.findIndex || function findIndex(fn, ctx){ ctx = ctx || this let result; ctx.some((value, index, arr), thisValue) => { return fn(value, index, arr) ? (result = index, true) : false }) return result }
46、performance.timing:利用performance.timing进行性能分析
window.onload = function() { setTimeout(function() { let t = performance.timing; console.log('DNS查询耗时 :' + (t.domainLookupEnd - t.domainLookupStart).toFixed(0)) console.log('TCP链接耗时 :' + (t.connectEnd - t.connectStart).toFixed(0)) console.log('request请求耗时 :' + (t.responseEnd - t.responseStart).toFixed(0)) console.log('解析dom树耗时 :' + (t.domComplete - t.domInteractive).toFixed(0)) console.log('白屏时间 :' + (t.responseStart - t.navigationStart).toFixed(0)) console.log('domready时间 :' + (t.domContentLoadedEventEnd - t.navigationStart).toFixed(0)) console.log('onload时间 :' + (t.loadEventEnd - t.navigationStart).toFixed(0)) if (t = performance.memory) { console.log('js内存使用占比:' + (t.usedJSHeapSize / t.totalJSHeapSize * 100).toFixed(2) + '%') } }) }
47、禁止某些键盘事件
document.addEventListener('keydown', function(event) { return !( 112 == event.keyCode || //禁止F1 123 == event.keyCode || //禁止F12 event.ctrlKey && 82 == event.keyCode || //禁止ctrl+R event.ctrlKey && 18 == event.keyCode || //禁止ctrl+N event.shiftKey && 121 == event.keyCode || //禁止shift+F10 event.altKey && 115 == event.keyCode || //禁止alt+F4 "A" == event.srcElement.tagName && event.shiftKey //禁止shift+点击a标签 ) || (event.returnValue = false) });
48、禁止右键、选择、复制
['contextmenu', 'selectstart', 'copy'].forEach(function(ev) { document.addEventListener(ev, function(event) { return event.returnValue = false; }) });
49、numAdd - -计算数字相加
function numAdd(num1, num2) { let baseNum, baseNum1, baseNum2; try { baseNum1 = num1.toString().split(".")[1].length; } catch (e) { baseNum1 = 0; } try { baseNum2 = num2.toString().split(".")[1].length; } catch (e) { baseNum2 = 0; } baseNum = Math.pow(10, Math.max(baseNum1, baseNum2)); return (num1 * baseNum + num2 * baseNum) / baseNum; };
50、numSub - - 计算数字相减
function numSub(num1, num2) { let baseNum, baseNum1, baseNum2; let precision;// 精度 try { baseNum1 = num1.toString().split(".")[1].length; } catch (e) { baseNum1 = 0; } try { baseNum2 = num2.toString().split(".")[1].length; } catch (e) { baseNum2 = 0; } baseNum = Math.pow(10, Math.max(baseNum1, baseNum2)); precision = (baseNum1 >= baseNum2) ? baseNum1 : baseNum2; return ((num1 * baseNum - num2 * baseNum) / baseNum).toFixed(precision); };
51、numMulti - - 计算数字相乘
function numMulti(num1, num2) { let baseNum = 0; try { baseNum += num1.toString().split(".")[1].length; } catch (e) { } try { baseNum += num2.toString().split(".")[1].length; } catch (e) { } return Number(num1.toString().replace(".", "")) * Number(num2.toString().replace(".", "")) / Math.pow(10, baseNum); };
52、numDiv - - 计算数字相除
function numDiv(num1, num2) { let baseNum1 = 0, baseNum2 = 0; let baseNum3, baseNum4; try { baseNum1 = num1.toString().split(".")[1].length; } catch (e) { baseNum1 = 0; } try { baseNum2 = num2.toString().split(".")[1].length; } catch (e) { baseNum2 = 0; } with (Math) { baseNum3 = Number(num1.toString().replace(".", "")); baseNum4 = Number(num2.toString().replace(".", "")); return (baseNum3 / baseNum4) * pow(10, baseNum2 - baseNum1); } };
【相关视频教程推荐:web前端】
The above is the detailed content of 50+ Utility Functions in JavaScript (Summary). For more information, please follow other related articles on the PHP Chinese website!

JavaScript is widely used in websites, mobile applications, desktop applications and server-side programming. 1) In website development, JavaScript operates DOM together with HTML and CSS to achieve dynamic effects and supports frameworks such as jQuery and React. 2) Through ReactNative and Ionic, JavaScript is used to develop cross-platform mobile applications. 3) The Electron framework enables JavaScript to build desktop applications. 4) Node.js allows JavaScript to run on the server side and supports high concurrent requests.

Python is more suitable for data science and automation, while JavaScript is more suitable for front-end and full-stack development. 1. Python performs well in data science and machine learning, using libraries such as NumPy and Pandas for data processing and modeling. 2. Python is concise and efficient in automation and scripting. 3. JavaScript is indispensable in front-end development and is used to build dynamic web pages and single-page applications. 4. JavaScript plays a role in back-end development through Node.js and supports full-stack development.

C and C play a vital role in the JavaScript engine, mainly used to implement interpreters and JIT compilers. 1) C is used to parse JavaScript source code and generate an abstract syntax tree. 2) C is responsible for generating and executing bytecode. 3) C implements the JIT compiler, optimizes and compiles hot-spot code at runtime, and significantly improves the execution efficiency of JavaScript.

JavaScript's application in the real world includes front-end and back-end development. 1) Display front-end applications by building a TODO list application, involving DOM operations and event processing. 2) Build RESTfulAPI through Node.js and Express to demonstrate back-end applications.

The main uses of JavaScript in web development include client interaction, form verification and asynchronous communication. 1) Dynamic content update and user interaction through DOM operations; 2) Client verification is carried out before the user submits data to improve the user experience; 3) Refreshless communication with the server is achieved through AJAX technology.

Understanding how JavaScript engine works internally is important to developers because it helps write more efficient code and understand performance bottlenecks and optimization strategies. 1) The engine's workflow includes three stages: parsing, compiling and execution; 2) During the execution process, the engine will perform dynamic optimization, such as inline cache and hidden classes; 3) Best practices include avoiding global variables, optimizing loops, using const and lets, and avoiding excessive use of closures.

Python is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.

Python and JavaScript have their own advantages and disadvantages in terms of community, libraries and resources. 1) The Python community is friendly and suitable for beginners, but the front-end development resources are not as rich as JavaScript. 2) Python is powerful in data science and machine learning libraries, while JavaScript is better in front-end development libraries and frameworks. 3) Both have rich learning resources, but Python is suitable for starting with official documents, while JavaScript is better with MDNWebDocs. The choice should be based on project needs and personal interests.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

Dreamweaver Mac version
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

WebStorm Mac version
Useful JavaScript development tools