Front-end Job Interview Questions

前端面试

https://github.com/h5bp/Front-end-Developer-Interview-Questions

https://github.com/MaximAbramchuck/awesome-interview-questions

https://thatjsdude.com/interview/index.html

http://caibaojian.com/fedbook/practice/front-end-interview.html

柯里化函数



function curry(fn) {

    var slice = [].slice;

    var len = fn.length;

    return function curried() {

        var args = slice.call(arguments);

        if (args.length >= len) {

            return fn.apply(null, args);

        }

        return function () {

            return curried.apply(null, args.concat(slice.call(arguments)));

        };

    };

}

var add = curry(function (a, b, c, d) {

    return a + b + c + d;

});

console.log(add(1)(2)(3)(4)); // 10

console.log(add(1, 2, 3)(4)); // 10

console.log(add(1)(2, 3)(4)); // 10

https://segmentfault.com/q/1010000004342477

`add(2)(5); // 7` & 柯里化 curry

js 实现, 函数 add(1)(2)(3); 无限极累加



"use strict";

/**

 *

 * @author xgqfrms

 * @license MIT

 * @copyright xgqfrms

 * @created 2019-01-01

 *

 * @description add & curry

 * @augments

 * @example

 *

 */

function add( seed ) {

    function retVal( later ) {

        return add( seed + later );

    }

    retVal.toString = function() {

        return seed;

    };

    return retVal;

}

console.log(add(1)(2)(3).toString());

// 6

console.log(add(1)(2)(3));

// ƒ 6

function addBug(a){

    function s(b){

       a = a+b;

       return s;

    }

    s.toString = function(){return a;}

    return s;

}

console.log(addBug(1)(2)(3)(4));

// ƒ 10

addBug(1);

// ƒ 1

let x = addBug(1)(2);

// ƒ 3

x;

// ƒ 3

alert(addBug(1)(2)(3)(4));

// alert: 10

// true