// Create an Array constages = [32,33,16,40]; // Create a Test Function functioncheckAge(age) { returnage >18; } // Are all ages over 18? ages.every(checkAge); Try it Yourself » More examples below. Description Theevery()method executes a function for each array element. ...
JavaScript Array every() 方法JavaScript Array 对象实例检测数组 ages 的所有元素是否都大于等于 18 :var ages = [32, 33, 16, 40];function checkAdult(age) { return age >= 18;}function myFunction() { document.getElementById("demo").innerHTML = ages.every(checkAdult);...
The every() method executes the function once for each element present in the array:If it finds an array element where the function returns a false value, every() returns false (and does not check the remaining values) If no false occur, every() returns true...
If all pass the test, the overall every method will pass true. If one or more fail the test, then the overall every method will return false.Checking every element of an array for a test #Suppose we have an array where we want to test if every number is above 15. This is a ...
JavaScript Array every() 方法 JavaScript Array every() 方法 实例 检测数组ages的所有元素是否都大于等于 18 : var ages = [32,33,16,40]; function checkAdult(age) { return age >=18; } function myFunction() { document.getElementById("demo").innerHTML = ages.every(checkAdult);...
JavaScript Array every() 方法JavaScript Array 对象实例检测数组 ages 的所有元素是否都大于等于 18 :var ages = [32, 33, 16, 40];function checkAdult(age) { return age >= 18;}function myFunction() { document.getElementById("demo").innerHTML = ages.every(checkAdult);...
JavaScript Array every() 方法 every()方法是js中的迭代方法,用于检测数组中的元素是否满足指定条件。 1、依次执行数组元素,如果一个元素不满足条件就返回false,不会继续执行后面的元素判断;所有数组元素都满足条件则返回true。 2、不会改变原数组。 语法
JavaScript Array every() 方法.pdf,JavaScript Array every() ⽅法 JavaScript Array every() ⽅法 JavaScript Array 对象 实例 检测数组 ages 的所有元素是否都⼤于 18 : var ages = [32, 33, 16, 40]; functi n checkAdult(age) { return age = 18; } functi n myF
JavaScriptArrayevery（）⽅法 JavaScript Array every() ⽅法 实例 检测数组ages的所有元素是否都⼤于等于 18 :var ages = [32, 33, 16, 40];function checkAdult(age) { return age >= 18;} function myFunction() { document.getElementById("demo").innerHTML = ages.every(checkAdult);} 输出...
function checkEven(num) { return num%2 === 0; } // create an array of numbers const numbers = [2, 4, 6, 7, 8]; // use the every() method along with // checkEven() on the numbers array let check = numbers.every(checkEven); console.log(check) // Output: false Run Cod...