While working with Javascript sometimes you have to check if a Javascript object/array is empty or it contains some keys/objects.
To check if JavaScript Array is empty or not, Someone can use below code(JsFiddle):
[code lang=”javascript”]
var myArray = [];
console.log("If Array is empty", myArray.length); // Output would be "0"
myArray.push("1");
myArray.push("2");
console.log("If Array is empty", myArray.length); // Output would be "2"
[/code]
To check if JavaScript Object is empty or not, Someone can use below function code(JSFiddle):
[code lang=”javascript”]
function isObjectEmpty(Obj) {
for(var key in Obj) {
if(Obj.hasOwnProperty(key))
return false;
}
return true;
}
var myObj = {}; // Empty Object
console.log("myObj", isObjectEmpty(myObj)); // returns "true"
var myObj = {"name": "youvcode"}; // Empty Object
console.log("myObj", isObjectEmpty(myObj)); // returns "false"
[/code]
Please let us know in comments if you have any better solution to check this. Thank you for reading this article.