if (injectedScript.hasNoValue(myVar)) { console.log('myVar is not defined'); } else { console.log('myVar is defined with value ' + myVar); }
let element = document.querySelector('#myElement'); if (injectedScript.hasNoValue(element)) { console.log('#myElement not found'); } else { console.log(element); }This code checks whether the element with ID `myElement` exists in the current context of the page. If it does not, it logs a message saying that it was not found. Otherwise, it logs the element object itself. The InjectedScript object is available through the DevTools API, which is built into browsers like Chrome and Firefox. Therefore, the package library for InjectedScript would be the browser's own DevTools API.