* @returns {Array} Returns the array of results.*///_.times的基础实现,循环n次,返回iteratee处理的index组成的数组functionbaseTimes(n, iteratee) {varindex = -1,//循环索引result = Array(n);//结果数组,长度为nwhile(++index < n) {//循环n次,结果数组每一个元素是当前index被iteratee处理后的结...
//includes.jsvarbaseIndexOf = require('./_baseIndexOf'),//获取value在数组 array所在的索引值(见源码学习(2))isArrayLike = require('./isArrayLike'),//是否是类似数组isString = require('./isString'),//是否是字符串toInteger = require('./toInteger'),//转化为整形values = require('./val...
functiondeepCopy(target,cache=newSet()){// 注意环引用if((typeoftarget!=='object'&&target!==null)||cache.has(target)){returntarget}if(Array.isArray(target)){returntarget.map(t=>{cache.add(t)returnt})}else{// 注意symbol keyreturn[...Object.keys(target),...Object.getOwnPropertySymbol...
Using lodash to get the closest next value of a prop I have an array of objects, each with non correlative ids. I would like to know if it is possbile, given an integer, to find the next closest id value object. Example const array = [{id: 4}, {id: 10}, {id: 15}] Run ...
In the example, we have an array of numbers. We remove all numbers 1 and 2 from the array. $ node main.js [ 3, 4, 5, 7, 8 ] Lodash collection takeThe _.take function creates a slice of an array with n elements taken from the beginning. The _.takeRight function creates a ...
(n); }).value(); // → logs each value from left to right and returns the array // → 从左到右记录每个值,并返回该数组 // 在 4.0.0 wrapped.forEach(function(n) { console.log(n); }); // → logs each value from left to right and returns the array // → 从左到右记录每个...
...为什么选择 Lodash ? Lodash 通过降低 array、number、objects、string 等等的使用难度从而让 JavaScript 变得更简单。...loadsh中的cloneDeep方法使用 cloneDeep方法介绍 _.cloneDeep(value) 这个方法类似_.clone,除了它会递归拷贝 value。(注:也叫深拷贝)。
From dealing with strings and objects to collections iterating problems, there will always be cases where there is a gap for an utility function to fulfil. Even with the mainstream adoption of ES6, I dare say that Javascript developers still don't get as much syntax sugars as other languages...
renameValues(renameObj)(strArray)- renameObj = { find: 'replace' } Similar torenamebut find/replace strings in array. keyWithField('id', 'value')(dataArray)- Creates a key/value index from an array of items. It's like_.keyBybut uses the field value ofvalueproperty instead of the en...
使用typeof运算符来进行判断. 第2行 import isSymbol from './isSymbol.js' 第二行导入的isSymbol方法,该方法也是lodash中的一个方法,其源码为: import getTag from './.internal/getTag.js' function isSymbol(value) { const type = typeof value return type == 'symbol' || (type === 'object...