is array typescript code example

Example 1: javascript check if is array

var colors=["red","green","blue"];

if(Array.isArray(colors)){
    //colors is an array
}

Example 2: javascript typeof array

Array.isArray(arr)

Example 3: js check if is array

if(Array.isArray(colors)){
    //colors is an array
}

Example 4: isarray

Array.isArray([1, 2, 3]);  // true
Array.isArray({foo: 123}); // false
Array.isArray('foobar');   // false
Array.isArray(undefined);  // false