JavaScript 数组 every 和 some 之间的区别

我看到在给定的测试中两者都返回 true 或 false。

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every

一起使用它们的正确情况应该是什么？

测试代码：

function checkUsersValid(goodUsers) {
  return function allUsersValid(submittedUsers) {
    //Im testing arrays here
    return submittedUsers.every(function isBigEnough(element, index, array) {
	  return goodUsers.some(function (el, i, arr) {
	  	return element.id == el.id;
	  });
	});
  };
}

var goodUsers = [
      { id: 1 },
      { id: 2 },
      { id: 3 }
    ];
    
var testAllValid = checkUsersValid(goodUsers);

testAllValid([
      { id: 2 },
      { id: 1 }
    ]);

（如果您了解 C# LINQ ，就像Any vs All)

• some将返回 true 如果any谓词是true

• every将返回 true 如果all谓词是true

其中谓词表示返回的函数bool（真/假）对于每个元素

every首先返回false.
some首先返回true