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TypeScript - check if array is empty
0 points
Using TypeScript it is possible to check if an array is empty in the following way.
Note:
Array.isArray(array)method can be useful too to check if constialbe is array type.
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const array1 = [];2
const array2 = [1, 2, 3];3
const array3 = [false];4
const array4 = [5
() => {6
return false;7
},8
];9
const array5 = [{ result: false }];10
11
console.log(array1.length == 0); // true12
console.log(array2.length == 0); // false13
console.log(array3.length == 0); // false14
console.log(array4.length == 0); // false15
console.log(array5.length == 0); // falseOutput:
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true2
false3
false4
false5
false