Answers for "check if there is a string or if it is undefined"

test if is undefined javascript

let id;

if(typeof id === 'undefined') {
    console.log("id is undefined...");
}

Posted by: Guest on August-10-2020

check if variable is undefined or null jquery

if (variable == null) {
    // variable is either null or undefined
}

Posted by: Guest on March-18-2020

Code answers related to "check if there is a string or if it is undefined"