every和some的区别

every,some遍历数组，every只要有一项不满足条件都返回false some有一项满足都会返回true

const fruits = [
    { name: 'apple', color: 'red' },
    { name: 'banana', color: 'yellow' },
    { name: 'grape', color: 'purple' }
  ];
 
function test() {
  // condition: short way, all fruits must be red
  const isAllRed = fruits.every(f => f.color == 'red');
 
  console.log(isAllRed); // false
}

const fruits = [
    { name: 'apple', color: 'red' },
    { name: 'banana', color: 'yellow' },
    { name: 'grape', color: 'purple' }
];
 
function test() {
  // condition: if any fruit is red
  const isAnyRed = fruits.some(f => f.color == 'red');
 
  console.log(isAnyRed); // true
}