{"id":327,"date":"2018-09-18T22:41:42","date_gmt":"2018-09-18T22:41:42","guid":{"rendered":"http:\/\/www.projectimmerse.com\/?p=327"},"modified":"2020-06-17T08:05:31","modified_gmt":"2020-06-17T08:05:31","slug":"javascript-debugger-statement","status":"publish","type":"post","link":"https:\/\/www.projectimmerse.com\/blog\/javascript-debugger-statement\/","title":{"rendered":"Javascript Debugger Statement"},"content":{"rendered":"

I was working on a behemoth, yeah look it up – the word means monstrous and enormous in size. This project was more on the marketing side, so there were a lot of platforms mixing in with this project, one of them being Hubspot<\/a> – a marketing software for managing leads. I’ve never worked with HubSpot before, but I was totally game. <\/p>\n

In troubleshooting the underlying issue(s), I like to categorize projects like hurricanes – cat1, cat2, cat3, cat4, cat5. This one was a cat4. Partly because it’s history was so vague, the type of project where you’re shooting darts in the dark. But the other half was much simpler – I just had to get familiarized with Hubspot, but this is an entirely different topic. I went off tangent here for a bit. Moving on. <\/p>\n

<\/p>\n

As I was working on some Javascript, I noticed that “debugger” statement – I’ve never seen it before. I looked it up and this statement has been available since ECMAScript 1, that’s a long time. Truthfully I wrestled with Javascript a long time and was intentionally ignorant of a lot of it’s features. <\/p>\n

To illustrate, the debugger statement looks like this<\/h2>\n
\r\n\r\nconsole.log('hello');\r\n\r\ndebugger; \/\/ program will halt here, unless you take action\r\n\r\nconsole.log('world');\r\n\r\n<\/pre>\n
I’m quickly reminded of the ‘use strict’ expression, yeah this is a literal expression not a statement. These are useful javascript constructs that are often under used, I myself don’t these often. Yeah I know I should at least use ‘use strict’. But a better comparison would be PHP’s die() or exit() functions in that it allows a program to terminate at specific points of your program. I’ve used this debugging method countless times and it’s helped me take down even the mightiest of behemoths.<\/p>\n
\r\n\r\necho 'hello';\r\n\r\nexit(); \/\/ terminates here\r\n\r\necho 'world'; \/\/ to see this output, you need to comment out exit()\r\n\r\n<\/pre>\n
I found that debugger statement interesting though, I’ve seen it through Chrome Web Developer Tools, also known as a “breakpoint” and through this interface you can add multiple “breakpoints” and inspect your code. I see it like a snap shot at a specific point in time, within the execution context (more on this later in another post, a super fundamental concept). <\/p>\n
I imagine the debugger statement is used much the same. I like this javascript feature, I was actually curious for a long while if Javascript had a built in construct for debugging scripts. Don’t get me wrong, I’m a big fan of using Web Developer tools, but I like the flexibility of using constructs. <\/p>\n","protected":false},"excerpt":{"rendered":"
I was working on a behemoth, yeah look it up – the word means monstrous and enormous in size. This project was more on the marketing side, so there were a lot of platforms mixing in with this project, one of them being Hubspot – a marketing software for managing leads. I’ve never worked with … <\/p>\n
Continue reading “Javascript Debugger Statement”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":1157,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-327","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"\nJavascript Debugger Statement - Project Immerse<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.projectimmerse.com\/blog\/javascript-debugger-statement\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Javascript Debugger Statement - Project Immerse\" \/>\n<meta property=\"og:description\" content=\"I was working on a behemoth, yeah look it up – the word means monstrous and enormous in size. 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