Javascript数组——some()、every()、forEach()遍历区别

var list=[1,2,3,4,5,6]

var sum = 0;

list.some(obj->{
  sum = sum + obj;
  
  if(obj === 5)
    return true
})

console.log(sum);

//sum == 10    

var list=[1,2,3,4,5,6]

var sum = 0;

list.euery(obj->{
  sum = sum + obj;
  
  if(obj === 5)
    return false
})

console.log(sum);

//sum == 10    

var list=[1,2,3,4,5,6]

var sum = 0;

list.some(obj->{
  sum = sum + obj;
  
  if(obj === 3)
    return true

  if(obj === 4)
    return false
  
  if(obj === 5)
    return

})

console.log(sum);

//sum == 21