如何知道 javascript 数组 object 值是否为真？

Question

I have a simple array of objects.

  { id: 1, name: 'John', license: true },
  { id: 1, name: 'Sam', license: false },
  { id: 1, name: 'Luis', license: true }
];

How to make a reusable function to check: 1) if license property for all of them together is true 2) if one of license property is true

Answer 1

You can check with these:

 const data = [{ id: 1, name: 'John', license: true }, { id: 1, name: 'Sam', license: false }, { id: 1, name: 'Luis', license: true } ]; var allTrue = data.every(i=> i.license === true); console.log(allTrue); var someTrue = data.some(k=> k.license === true) console.log(someTrue)

Answer 2

i hope this helps

 var array = [{ id: 1, name: 'John', license: true }, { id: 1, name: 'Sam', license: false}, { id: 1, name: 'Luis', license: true } ]; var trueCounter = 0; function checkValid(arr){ for(let obj of arr){ if(obj.license == true){ trueCounter++; } } if(trueCounter == array.length){ return "all items are true" } else if (trueCounter >= 1){ return "at least one item is true" } else { return "all items are false" } } console.log(checkValid(array));