javascript check if any value in array is true
let boolArray1 = [true, false, false]
let boolArray2 = [false, false, false]
boolArray1.some(x => x); // true
boolArray2.some(x => x); // false
// Example of using a function to evaluate array
let numberArray = [1, 2, 3, 4, 5];
let oddNumbers = [1, 3, 5, 7, 9];
// checks whether an element is even
const even = (element) => element % 2 === 0;
numberArray.some(even); // true
oddNumbers.some(even); // falsecheck if all elements in array are true javascript
You can use `every()` array method
let data = [ {status: true}, {status: false}, {status: true} ]
let result = data.every((i) => {
return i.status === true
})
console.log(result) // false
let data = [ {status: true}, {status: true}, {status: true} ]
let result = data.every((i) => {
return i.status === true
})
console.log(result) // truejavascript every method
// array.every(function(elemnt)) method takes in a function
// which evaulates each elment
// The every method is designed to check if all the elements
// in an array meet a specific condition
// This condition is defined within your function
let numbers = [1, 2, 3, 42, 3, 2, 4, -1];
let allPassed = numbers.every(function(element){
return element > 0;
});
// This method returns a Boolean value
// allPassed is set to false because not all elements were greater than 0javascript every
const age= [2,7,12,17,21];
age.every(function(person){
return person>18;
}); //false
//es6
const age= [2,7,12,17,21];
age.every((person)=> person>18); //falseCopyright © 2021 Codeinu
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