Answers for "js arr is empty"

javascript check if array is empty

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

javascript check if array is empty

if (array && !array.length) {
    // array is defined but has no element
}

check if an array is empty javascript

if (!Array.isArray(array) || !array.length) {
  // array does not exist, is not an array, or is empty
  // ⇒ do not attempt to process array
}

javascript is array empty

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