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ScriptEd Advanced Course

Topic: Debugging

ScriptEd lesson slides

ScriptEd

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Whiteboard Challenge Solutions

https://jsbin.com/juqizuqowu/1/edit?js,console

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Do Now - Find the bug

Requirement: Need function that takes in single input, and if that input is equal to ‘moth’, it prints ‘moth in relay’ otherwise it prints ‘No bug’.

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function remove_bug(input){

var bug_check = 'beetle';

if (input == bug_check){

console.log(bug_check + " in relay");

}

else {

console.log("No bug")

}

}

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We Do - Find the bug

There are few bugs in the following popcode app. Help me fix them.

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https://popcode.org/?gist=4e18cc99572229072456729115d9642b

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Debugging

What is a bug?

A software bug is an error, flaw, failure or fault in a computer program or system that causes it to produce an incorrect or unexpected result, or to behave in unintended ways.

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Is that it?

Source: https://en.wikipedia.org/wiki/Software_bug

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Debugging

Why bug?

On September 9, 1945, U.S. Navy officer Grace Hopper found a moth between the relays on the Harvard Mark II computer she was working on.

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Source: https://thenextweb.com/shareables/2013/09/18/the-very-first-computer-bug/#.tnw_dQdMpNLq

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Debugging

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Exercise - Get all the bugs

Find all the bugs in: https://jsbin.com/gusihiy/60/edit?html,js,output

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If you finish the bugs above, debug this addition calculator: http://jsbin.com/bapeboramu/edit?html,js,output

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Resources:

ScriptEd

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Exercise - Expected Output

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Exit Ticket

  1. Write three ideas for a project that you would like to work on (e.g., web app, game, web store, etc.)
  2. We will introduce the Entrepreneurial project next week.

ScriptEd