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 (typeof array !== 'undefined' && array.length === 0) {
// the array is defined and has no elements
}javascript check if array is not empty
if (array === undefined || array.length == 0) {
// array empty or does not exist
}javascript check if array is empty
if (array && !array.length) {
// array is defined but has no element
}javascript not empty array not string
if (Array.isArray(array) && array.length) {
// array exists and is not empty
}check array empty or not in javascript
// 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
}check row empty array javascript
if(array && array.length){
// not empty
} else {
// empty
}Copyright © 2021 Codeinu
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