胆小的牛肉丸人狠话不多

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题解 | #字符串字符统计#

function count(str) { str = str.replace(/\s*/g,""); let obj = {}; for(var value of str){ if(obj[value]){ obj[value]++;...

2023-01-10

0 201

题解 | #将字符串转换为驼峰格式#

function cssStyle2DomStyle(sName) { let arr = sName.split("-"); if(!arr[0]){ arr.splice(0,1); } let html = ""; for(var i =...

2023-01-10

0 199

题解 | #数组去重#

Array.prototype.uniq = function () { let newArr = []; for(var i =0;i<this.length;i++){ if(newArr.includes(this[i])){ th...

2023-01-09

0 169

题解 | #批量改变对象的属性#

function alterObjects(constructor, greeting) { constructor.prototype.greeting = greeting; }

2023-01-09

0 122

题解 | #改变上下文#

function alterContext(fn, obj) { obj.fn=fn; return obj.fn(); }

2023-01-09

0 124

题解 | #乘法#

function multiply(a, b) { return (a*b).toPrecision(1); }

2023-01-09

0 180

题解 | #二进制转换#

function convertToBinary(num) { return '0'.repeat(8-num.toString(2).length)+num.toString(2); }

2023-01-09

0 142

题解 | #添加元素#

function insert(arr, item, index) { let newArr = arr.concat(); newArr.splice(index,0,item); return newArr; }

2023-01-04

0 159

题解 | #添加元素#

function append(arr, item) { let newArr = JSON.parse(JSON.stringify(arr)); newArr.push(item); return newArr; }

2023-01-03

0 144

题解 | #数组求和#

function sum(arr) { let result = 0; for(var i =0;i<arr.length;i++){ result+=arr[i]; } return result; }

2023-01-02

0 129