javascript is an empty array undefined code example

Example 1: javascript check if array is not empty

if (array === undefined || array.length == 0) {
    // array empty or does not exist
}

Example 2: javascript is array empty

var colors=[];
if(!colors.length){
	// I am empty
}else{
	// I am not empty
}

Example 3: check if array is empty javascript

array.length = []