Array 对数组的内部支持 Array.concat( ) 连接数组 Array.join( ) 将数组元素连接起来以构建一个字符串 Array.length 数组的大小 Array.pop( ) 删除并返回数组的最后一个元素 Array.push( ) 给数组添加元素 Array.reverse( ) 颠倒数组中元素的顺序 Array.shift( ) 将元素移出数组 Array.slice( ) 返回数组的...
letisActive =true; (4)数组(Array) 数组用于存储多个值,值可以是任何数据类型。 letfruits = ["Apple","Banana","Cherry"]; (5)对象(Object) 对象是由键值对组成的集合。每个键(或称属性)都与一个值关联,值可以是任何数据类型。 letperson={name:"mediaTEA",age:7,isEmployed:true}; 二、运算符 运算...
Array length is not read-only. By setting the length property, we can remove items from or add items to the end of the array. Copy letcolors = ["red","blue","green"];// creates an array with three stringsconsole.log(colors);/*fromwww.java2s.com*/colors.length= 2; console.log(c...
We will check every possible subarray within the given array and count the number of zeros and ones in each subarray. If the number of ones and zeros are equal then we store the length of that subarray in our temporary solution, simultaneously we would store themaxlengthof the subarray by c...
log(deque.size()) // 1 实战应用 循环队列 - 模拟击鼓传花游戏 规则: 使用队列模拟击鼓传花 当执行一定的约定次数(每次都随机一个数)时,花在谁手里,谁被淘汰 重复执行游戏,直到剩下最后一人,为胜利者 代码语言:javascript 复制 /** * hotPotato() 模拟击鼓传花游戏 * @param {Array} elementList 需...
javascript基础1,主要写(==和 的区别), Array对象, Object对象, this关键字,短路操作,Set集合,Map集合和String字符串操作。 1. == , 1. 在js中需要值相等类型相等 2. == 在js中值相等,类型不相等会自动转换 2.Array 全部Array
let x = Number.MAX_SAFE_INTEGER; 方法: Number.isInteger() Number.isSafeInteger() 9.Number.EPSILON is the difference between the smallest floating point number greater than 1 and 1. let x = Number.EPSILON; 10.判断数组 Array.isArray()...
Learn how to handle arrays in React and JavaScript with ease. Discover how to get the length of an array, count elements in an array, and determine the size of an array. Explore the differences between react array length, react length of array, javascrip
arrayToHtmlList(['item 1', 'item 2'], 'myListID'); 6.average:平均数 const average = (...nums) => nums.reduce((acc, val) => acc + val, 0) / nums.length; average(...[1, 2, 3]); // 2 average(1, 2, 3); // 2 ...
“Use the array literal notation [].”:“使用数组的符号 []“, “Expected an operator and instead saw ‘{a}’.”:“需要用一个符号来代替’{a}’”, “Unexpected space after ‘{a}’.”:“在’{a}’之后不能出现空格”, “Unexpected space before ‘{a}’.”:“在’{a}’之前不能出现空...