给你个自写的filter:function filter(obj, func) { let ret ...
filter_range.js function isInRange(val) { return val >= this.lower && val <= this.upper; } let range = { lower: 1, upper: 10 }; let data = [-2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]; let res = data.filter(isInRange, range); console.log(res);...
IE不兼容解决办法:写个共用方法, Array.prototype.myfilter = function(fun/*, thisp*/){varlen =this.length;if(typeoffun !="function"){thrownewTypeError(); }varres =newArray();varthisp = arguments[1];for(vari =0; i < len; i++){if(iinthis){varval =this[i];//in case fun mutat...
它用于把Array的某些元素过滤掉,然后返回剩下的元素组成的数组。 2. 例子 2.1 尝试用filter()筛选出素数: 'use strict';functionget_primes(arr) {varresult =[]; result= arr.filter(function(n){varflag =false;if(n>1){ flag=true;for(vari=2; i<n; i++){if(n%i===0){ flag=false;break; ...
Salesforce JS中如何使用 Filter函数与Map函数与concat()方法 image.png 1.Filter函数数组中每个元素调用callback 函数,为等于True的元素创建一个新的数组。...array.filter(function (element, index, self) { return true or false; }); 1.element 元素的值 2.index 元素的索引...3.self 被遍历的数组例子...
functionisInRange(value){if(typeofvalue !=='number') {returnfalse;}returnvalue >=this.lower && value <=this.upper;} letdata = [10,20,"30",1,5,'JavaScript filter',undefined,'example']; letrange = {lower:1,upp...
We filter an array of product objects to find items with prices over 500. The callback function checks each object's price property. Only objects meeting the condition are included in the new array. $ node main.js [ { name: 'Laptop', price: 999 }, ...
[1, 2, 3, 4, 5, 6];const evenNumbers = numbers.filter(function (num) {return num % 2 === 0;});console.log(evenNumbers); // 输出: [2, 4, 6] 过滤长度大于等于3的字符串: const words = ["apple", "banana", "kiwi", "grape"];const longWords = words.filter(function (word)...
(innerHTML方式,字符串拼接)操作,将数据内填充到页面中指定的位置,当然下面的是伪代码模拟一下axios.get("/api/mock/linker.json").then(res=>{res=res.data;if(res.ret==true){letdata=res.data;this.members=data.members;}})functionshowName(){for(keyinthis.members){for(vari=0;i<members[key]....
1. 2. 在controller和service中使用filter 我们的js代码中也可以使用过滤器,方式就是我们熟悉的依赖注入,例如我要在controller中使用currency过滤器,只需将它注入到该controller中即可,代码如下: app.controller('testC',function($scope,currencyFilter){ $scope.num = currencyFilter(123534); } 1....