Return an array of all values in ages[] that are 18 or over:const ages = [32, 33, 16, 40];const result = ages.filter(checkAdult);function checkAdult(age) { return age >= 18;}Try it Yourself » DescriptionThe filter() method creates a new array filled with elements that pass a...
[Javascript] The Array filter method One very common operation in programming is to iterate through an Array's contents, apply a test function to each item, and create a new array containing only those items the passed the test. For example, let's say you wanted to loop through an array ...
// JavaScript to illustrate filter() methodfunctionisEven(value){returnvalue %2==0; }functionfunc(){varfiltered = [11,98,31,23,944].filter(isEven);document.write(filtered); } func(); 输出: [98,944] 支持的浏览器:JavaScript Array filter()方法支持的浏览器如下: 谷歌浏览器 微软边缘 9.0 火...
filter() 方法创建一个新的数组,新数组中的元素是通过检查指定数组中符合条件的所有元素。 通过一定的条件逻辑可以筛选过滤去重。 varweathers=[{"curTemp":"35","temp":"22~34","weather":"晴","wind":"东北风4级","cname":"黄帝故里","name":"huangdiguli","aqi":"32","aqi1":"优","humidity"...
array.filter(function(currentValue,index,arr), thisValue) 1. 参数说明 实例介绍 例如,在一个Array中,删掉偶数,只保留奇数,可以这么写: var arr = [1, 2, 4, 5, 6, 9, 10, 15]; var r = arr.filter(function (x) { return x % 2 !== 0; ...
JavaScript Array filter() 方法 varages = [32, 33, 16, 40];functioncheckAdult(age,index,array) {returnage >= 18; }functionmyFunction() { document.getElementById("demo").innerHTML =ages.filter(checkAdult); } 输出结果为: 32,33,40...
array.filter(function(currentValue,index,arr),thisValue) filter()有三个参数,分别是正在处理的当前元素、该元素的索引以及调用该方法的数组。后两者是可选项。 filter()返回数组,包含了符合条件的所有元素。如果没有符合条件的元素则返回空数组。 === map() 方法返回一个新数组,数组中的元素为原始数组元素调用...
关于javascript Array的filter方法 let arr = [20,30,40]; let newArr = arr.filter((item)=>item<40); console.log(newArr)//[20,30] 数组的filter方法第一个参数是方法filter会执行其中的方法返回一个执行参数方法后返回值为真的选项所组成的新数组...
JavaScript Array filter() 方法JavaScript Array 对象实例返回数组 ages 中所有元素都大于 18 的元素:var ages = [32, 33, 16, 40];function checkAdult(age) { return age >= 18;}function myFunction() { document.getElementById("demo").innerHTML = ages.filter(checkAdult);...
The syntax of thefilter()method is: arr.filter(callback(element), thisArg) Here,arris an array. filter() Parameters Thefilter()method takes in: callback- The test function to execute on each array element; returnstrueif element passes the test, elsefalse. It takes in: ...