checking array empty javascript code example

Example 1: javascript check if array is empty

if (typeof array !== 'undefined' && array.length === 0) {
    // the array is defined and has no elements
}

Example 2: check row empty array javascript

if(array && array.length){   
   // not empty 
} else {
   // empty
}

Example 3: javascript is array empty

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