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JavaScript JavaScript and the DOM (Retiring) Responding to User Interaction Events and Functions as Parameters Review

drew s
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drew s
Python Development Techdegree Graduate 19,491 Points
Posted by drew s
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drew s
Python Development Techdegree Graduate 19,491 Points

JavaScript

How would you set the following function ‘add’ up to run after 5 seconds pass, using Window.setTimout? In addition, how would you pass ‘add’ the arguments 2 and 2 when it runs?

function add(num1, num2){ console.log(num1 + num2);

2 Answers

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

This is a great opportunity to practice using the documentation. Take a look at the MDN page for setTimeout(), and pay particular attention to what arguments it takes and in which order.

Then it should be pretty easy to spot the correct answer in the quiz.

jdotshot
jdotshot
18,939 Points
jdotshot
jdotshot
18,939 Points

window.setTimeout(add,5000,2,2);. The window.setTimeout(add(2,2),5000); can seem like the first choice, but working through the function, it would first executed the add function with the parenthesis and then wait five seconds. This isn't what the question is asking for which makes the first option correct.