Writing into an alert box using window.alert().
window.alert( 24+ 44 );
Note that when the script above is tested, an alert window comes up and display the result of 24+44 i.e. 68.
Writing into the HTML output using document.write() .
Note that when the button is clicked, a document comes up that displays the result as 68.
Writing into the browser console, using console.log() .
console.log( 24 + 44);
Writing into an HTML element, using innerHTML .
("mon").innerHTML = 24 +
Note that you set an id property, and the script gets the result as 68, using that Id.