LeeCroft at 15:27, 29 January 2015

2015-01-29T15:27:47Z

← Older revision		Revision as of 15:27, 29 January 2015
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	<li>You first place <code>debugger</code> at the points in the code you wish to analyze further.</li>		<li>You first place <code>debugger</code> at the points in the code you wish to analyze further.</li>
	<li>Next, run the application in a terminal with the debugger. For an application called app, this would look like <code>node debug app</code>.</li>		<li>Next, run the application in a terminal with the debugger. For an application called app, this would look like <code>node debug app</code>.</li>
	<li>The debugger will stop at the first line of code and enter a REPL (read, evaluate, print loop) in which you can enter any valid JavaScript code, usually to to examine or modify variables.~~</li>~~		<li>The debugger will stop at the first line of code and wait for a command.</li>
	~~<li>~~Type <code>ctrl+c</code> to break from the loop.</li>		<li>You can enter commands such as <code>s</code>(step in), <code>o</code>(step out), <code>n</code>(next line) and <code>c</code>(continue) to move through the execution of the program.</li>
			<li>The command <code>repl</code> can be used to enter a REPL (read, evaluate, print loop) in which you can enter any valid JavaScript code, usually to to examine or modify variables. Type <code>ctrl+c</code> to break from the loop.</li>
	<li>The program's execution will pause at every point in the code you placed a <code>debugger</code> statement.</li>		<li>The program's execution will pause at every point in the code you placed a <code>debugger</code> statement.</li>
	~~<li>When not in REPL, commands such as s(step in), o(step out) and c(continue) can be used to move through the execution of the program.</li>~~
	<li>If you choose the continue command, execution will run until a <code>debugger</code> break point is encountered.</li>		<li>If you choose the continue command, execution will run until a <code>debugger</code> break point is encountered.</li>
	</ul>		</ul>
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	<li><code>debugger</code> tells Node's debugger to stop running code when it reaches that point, so that you can see exactly what is happening at that place.</li>		<li><code>debugger</code> tells Node's debugger to stop running code when it reaches that point, so that you can see exactly what is happening at that place.</li>
	<li>To start the debugger, type <code>node debug ./bin/www</code> in the terminal.</li>		<li>To start the debugger, type <code>node debug ./bin/www</code> in the terminal.</li>
	<li>Type ~~<code>ctrl+c</code> to exit the REPL and then type~~ <code>c</code> to continue the execution of the code up to the <code>debugger</code> point.</li>		<li>Type <code>c</code> to continue the execution of the code up to the <code>debugger</code> point.</li>
	<li>In the ~~terminal~~, ~~the node debugger can~~ be ~~used~~ to change ~~any~~ values in the application.</li>		<li>When the debugger has hit the break point, type <code>repl</code> to be able to change values in the application.</li>
	<li>~~When the deugger has hit the break point, type~~ <code>state[0].country = “Canada”;</code></li>		<li>Type <code>state[0].country = “Canada”;</code></li>
	<li>In this case you are changing information that has been entered by the user in the form from within the Node debugger.</li>		<li>In this case you are changing information that has been entered by the user in the form from within the Node debugger.</li>
	</ul>		</ul>

LeeCroft at 04:07, 28 January 2015

2015-01-28T04:07:03Z

Show changes

Soma: Created page with "==Topics & Readings== ==Audio & Video== The video and audio are available below (separately, unfortunately): * Video in [http://homeostasis.scs.carleton.ca/~soma/webfund-20..."

2015-01-22T21:51:01Z

Created page with "==Topics & Readings== ==Audio & Video== The video and audio are available below (separately, unfortunately): * Video in [http://homeostasis.scs.carleton.ca/~soma/webfund-20..."

New page

==Topics & Readings==

==Audio & Video==

The video and audio are available below (separately, unfortunately):

* Video in [http://homeostasis.scs.carleton.ca/~soma/webfund-2015w/lectures/comp2406-2015w-lec05-19Jan2015w.mp4 MP4]
* Audio in AAC (m4a), [http://homeostasis.scs.carleton.ca/~soma/webfund-2015w/lectures/comp2406-2015w-lec05-19Jan2015w-part1.m4a Part 1] and [http://homeostasis.scs.carleton.ca/~soma/webfund-2015w/lectures/comp2406-2015w-lec05-19Jan2015w-part2.m4a Part 2]

==Notes==

WebFund 2015W Lecture 5 - Revision history

LeeCroft at 15:27, 29 January 2015

LeeCroft at 04:07, 28 January 2015

Soma: Created page with "==Topics & Readings== ==Audio & Video== The video and audio are available below (separately, unfortunately): * Video in [http://homeostasis.scs.carleton.ca/~soma/webfund-20..."