Javascript Code Examples – Gary Sieling

There are a couple ways to update values in the Sequelize ORM: db.Alert.update( { url: url }, { fields: , where: {id: id} } ); If you have an object, this is also supposed to work: var alert = db...

https://www.garysieling.com/blog/sequelize-update-example/?utm_source=rss&utm_medium=rss&utm_campaign=sequelize-update-example

The rise of “platform” sites (e.g. Heroku) enables developers to build and deploy web applications cheaply, without understanding operational problems. Typically these products let you purcha...

https://www.garysieling.com/blog/validating-application-performance-in-a-cloud-environment-using-c-hangfire-and-rethinkdb/?utm_source=rss&utm_medium=rss&utm_campaign=validating-application-performance-in-a-cloud-environment-using-c-hangfire-and-rethinkdb

Some libraries, like PDF.js, initialize their own logging function, which wraps console.log1. If this runs in a context where function.bind does not exist, you’ll get the following error: TypeE...

https://www.garysieling.com/blog/fixing-the-error-typeerror-undefined-is-not-a-function-evaluating-globalscopeconsolelog-bindglobalscopeconsole/?utm_source=rss&utm_medium=rss&utm_campaign=fixing-the-error-typeerror-undefined-is-not-a-function-evaluating-globalscopeconsolelog-bindglobalscopeconsole

Fisheye puts a bunch of useful columns in code reviews, but they’re irritating if you want to copy code out, because they copy too: I’ve found it helpful to create bulk reviews to view patche...

https://www.garysieling.com/blog/javascript-to-remove-line-number-author-revision-columns-from-fisheyecrucible/?utm_source=rss&utm_medium=rss&utm_campaign=javascript-to-remove-line-number-author-revision-columns-from-fisheyecrucible

Lunr.js is a simple full-text engine in Javascript. Full text search ranks documents returned from a query by how closely they resemble the query, based on word frequency and grammatical consider...

https://www.garysieling.com/blog/identifying-important-keywords-using-lunr-js-and-the-blekko-api/?utm_source=rss&utm_medium=rss&utm_campaign=identifying-important-keywords-using-lunr-js-and-the-blekko-api

Google Analytics has a nice screen which shows alerts for changes that appear interesting – basically any large increase or decrease in traffic from a particular source: With appropriate API ho...

https://www.garysieling.com/blog/exploring-dimensional-data-with-javascript/?utm_source=rss&utm_medium=rss&utm_campaign=exploring-dimensional-data-with-javascript

Closures are a language feature which allow the programmer to inject static variables into a function’s scope, without the use of method parameters. E.g.: a = "b"; function c() { return a; } c(...

https://www.garysieling.com/blog/parsing-javascript-in-javascript/?utm_source=rss&utm_medium=rss&utm_campaign=parsing-javascript-in-javascript

I generally find discussions of design patterns a bit dry, but in testing new Javascript libraries, I’ve stumbled across some interesting tactics. Object oriented design patterns are typical no...

https://www.garysieling.com/blog/interesting-functional-programming-patterns-in-four-javascript-libraries/?utm_source=rss&utm_medium=rss&utm_campaign=interesting-functional-programming-patterns-in-four-javascript-libraries

Technologies used: Vagrant + Virtualbox, Node.js, node-static, Lunr.js, node-lazy, phantomjs Much information is trapped inside PDFs, and if you want to analyze it you’ll need a tool that extra...

https://www.garysieling.com/blog/parsing-pdfs-at-scale-with-node-js-pdf-js-and-lunr-js/?utm_source=rss&utm_medium=rss&utm_campaign=parsing-pdfs-at-scale-with-node-js-pdf-js-and-lunr-js

I once worked for a company that sold access to legal and financial databases (as they call it, “intelligent information“). Most court records are PDFS available through PACER, a website deve...

https://www.garysieling.com/blog/building-a-full-text-index-in-javascript/?utm_source=rss&utm_medium=rss&utm_campaign=building-a-full-text-index-in-javascript