{"id":1604,"date":"2012-10-14T22:25:51","date_gmt":"2012-10-15T02:25:51","guid":{"rendered":"http:\/\/www.rexfeng.com\/blog\/?p=1604"},"modified":"2012-10-14T22:25:51","modified_gmt":"2012-10-15T02:25:51","slug":"10-tips-for-javascript-beginners","status":"publish","type":"post","link":"https:\/\/www.rexfeng.com\/blog\/2012\/10\/10-tips-for-javascript-beginners\/","title":{"rendered":"10 Tips for JavaScript Beginners"},"content":{"rendered":"

This JavaScript 101 post is based on the presentation JavaScript Syntax by Ynon Perek<\/a>.<\/p>\n

\"Puzzle<\/a>

Puzzle pieces By liza31337<\/p><\/div>\n

Ynon<\/a>‘s slides do a great job covering key JavaScript fundamentals:<\/p>\n

Values<\/strong>
\n<\/span>1. Undefined refers to anything that hasn’t been assigned a value.
\n2. In JS, false is made up of false, null, unidentified, “”, 0<\/em>, and NaN<\/em>.
\n3. Everything else is truthy in JS.<\/p>\n

Naming Conventions<\/strong>
\n4. Identifiers start with letters, _,<\/em> or $<\/em>. They are followed by\u00a0letters, digits, _, <\/em>or $.<\/em>
\n5. Variable names are lowercased, with words split by _. Function names are CamelCased.<\/p>\n

Variables<\/strong>
\n6. JavaScript has function scope.
\n7. Outside of functions, any variables defined have global scope and\u00a0is accessible anywhere in the application.<\/p>\n

Objects<\/strong>
\n8. Objects are a collection of key, value pairs.
\n9. Functions are normal JS objects.
\n10. function foo() {} is equivalent to var foo = function() {};<\/p>\n

JavaScript<\/a> and JQuery<\/a> are powerful tools for implementing web page user interaction. The best way to get started is to try writing some JavaScript and look up anything that you’re not sure about.<\/p>\n","protected":false},"excerpt":{"rendered":"

This JavaScript 101 post is based on the presentation JavaScript Syntax by Ynon Perek. Ynon‘s slides do a great job covering key JavaScript fundamentals: Values 1. Undefined refers to anything that hasn’t been assigned a value. 2. In JS, false is made up of false, null, unidentified, “”, 0, and NaN. 3. Everything else is […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1029],"tags":[],"class_list":["post-1604","post","type-post","status-publish","format-standard","hentry","category-programming"],"_links":{"self":[{"href":"https:\/\/www.rexfeng.com\/blog\/wp-json\/wp\/v2\/posts\/1604","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rexfeng.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.rexfeng.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.rexfeng.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.rexfeng.com\/blog\/wp-json\/wp\/v2\/comments?post=1604"}],"version-history":[{"count":3,"href":"https:\/\/www.rexfeng.com\/blog\/wp-json\/wp\/v2\/posts\/1604\/revisions"}],"predecessor-version":[{"id":1608,"href":"https:\/\/www.rexfeng.com\/blog\/wp-json\/wp\/v2\/posts\/1604\/revisions\/1608"}],"wp:attachment":[{"href":"https:\/\/www.rexfeng.com\/blog\/wp-json\/wp\/v2\/media?parent=1604"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.rexfeng.com\/blog\/wp-json\/wp\/v2\/categories?post=1604"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.rexfeng.com\/blog\/wp-json\/wp\/v2\/tags?post=1604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}