check array empty or not in javascript
snippet in javascript

check array empty or not in javascript

user499

// To safely test if the array referenced by variable “array” isn’t empty:

if (array && array.length) {    
   // not empty  
} else { 
   // empty 
} 
// Note that if “array” is assigned to some other object that isn’t an array, the code will still execute the “else” part.

// A possible improvement to check that the object is specifically an empty array might be this:

if (array && array.constructor === Array && array.length === 0) {    
   // strictly an empty array 
} else { 
   // either null, or not an array or not an empty array 
} 

javascript check if array is empty

user3010

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

javascript check if array is not empty

user6686

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

javascript how to check if array is empty

user3342

if(array.length > 0)

how to check an empty array js

user6867

Array.isArray(emptyArray) && emptyArray.length