jQuery.isEmptyObject({});// true 2 jQuery.isEmptyObject({"foo":"1"});// false Conclusion In this article, we discussed a number of different ways to check if an object is empty or not in JavaScript. Check out some of our other tutorials about JavaScript programming!
For JavaScript objects, there is no built-in .length or .isEmpty method available to check if they are empty. Here are 4 different methods that you can use to make sure that a given object does not have its own properties: Object.entries() Method The Object.entries() method takes an ...
}// ✅ Check if nullif(message ===null) {console.log('variable is null'); }// ✅ Check if value is NOT equal to null and undefinedif(message !==undefined&& message !==null) {console.log('variable is NOT undefined or null'); }// ✅ Check if value is equal to null or un...
To obtain a JavaScript Map size, we can make use of thesizeproperty. The return value is the number of elements present within the Map object. Here is a code showing us how to check the size of a JavaScript Map jsx varmyMap =newMap(); myMap.set("key1","value1"); myMap.set("...
<html> <body> <script> var str = ' '; if(str.trim() === ''){ document.write('String is empty'); } </script> </body> </html> Following is the output of the above program −String is empty So, we have seen how to check the empty string in JavaScript using the length pro...
Check if .txt file is empty Check if a process is running check if a process or service is hanging/not responding? Check if a text file is blank in powershell check if computer exist in ou Check if drive exists, If not map Check if Email address exists in Office 365 and if exists,...
This article will discuss all the different methods to check if a JavaScript array contains a value or not, using include(), indexOf(), find(), some()
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check.boolean(thing): Returnstrueifthingis a boolean,falseotherwise. Object predicates check.object(thing): Returnstrueifthingis a plain-old JavaScript object,falseotherwise. check.emptyObject(thing): Returnstrueifthingis an empty object,falseotherwise. ...