{"id":19915124,"url":"https://github.com/devdezzies/fundamentals-javascript","last_synced_at":"2026-04-16T01:33:14.318Z","repository":{"id":185587682,"uuid":"514092806","full_name":"devdezzies/Fundamentals-JavaScript","owner":"devdezzies","description":"course by Kyle Simpson (Frontend Masters)","archived":false,"fork":false,"pushed_at":"2022-07-16T01:24:30.000Z","size":14,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"main","last_synced_at":"2025-10-29T19:53:03.620Z","etag":null,"topics":["fundamentals","javascript"],"latest_commit_sha":null,"homepage":"","language":"JavaScript","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/devdezzies.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null}},"created_at":"2022-07-15T01:10:39.000Z","updated_at":"2022-07-17T06:14:10.000Z","dependencies_parsed_at":null,"dependency_job_id":"eb747d62-9451-41a7-ae02-3fbdba5b880c","html_url":"https://github.com/devdezzies/Fundamentals-JavaScript","commit_stats":null,"previous_names":["devdezzies/fundamentals-javascript"],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/devdezzies/Fundamentals-JavaScript","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/devdezzies%2FFundamentals-JavaScript","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/devdezzies%2FFundamentals-JavaScript/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/devdezzies%2FFundamentals-JavaScript/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/devdezzies%2FFundamentals-JavaScript/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/devdezzies","download_url":"https://codeload.github.com/devdezzies/Fundamentals-JavaScript/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/devdezzies%2FFundamentals-JavaScript/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":31867711,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-04-15T15:24:51.572Z","status":"ssl_error","status_checked_at":"2026-04-15T15:24:39.138Z","response_time":63,"last_error":"SSL_read: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["fundamentals","javascript"],"created_at":"2024-11-12T21:38:43.594Z","updated_at":"2026-04-16T01:33:14.278Z","avatar_url":"https://github.com/devdezzies.png","language":"JavaScript","funding_links":[],"categories":[],"sub_categories":[],"readme":"## THREE PILLARS OF JS\n\n1. Types/Coercion\n2. Scope/Closures\n3. this/Prototypes\n\n## TYPES / COERCION\n\n* Primitive Types\n* Converting Types\n* Checking Equality\n\n1. Primitive Types \n\n\u003e \"In JavaScript, everything is an object\"\n\n* Undefined\n* String\n* Number\n* Boolean\n* Object\n* Symbol\n\n* null (also primitive type)\n* Function (is not a primitive type just a subtype of the object type) also Array is not a primitive type\n\n\u003e \"In JavaScript, variables don't have types, values do\"\n\n```\nvar v;\ntypeof v;  // undefined\n\nv = \"1\";\ntypeof v;  // string\n\nv = 2;\ntypeof v;  // number\n\nv = true;\ntypeof v;  // boolean\n\nv = {};\ntypeof v;  // object\n\nv = Symbol();\ntypeof v;  // symbol\n\ntypeof doesntExist;  // undefined\n\nvar v = null;\ntypeof v;   // object (this is an histrorical BUG in JavaScript)\n\nv = function(){};\ntypeof v;  // function\n\nv = [1, 2, 3];\ntypeof v;  // object (subtype of the object there)\n\n```\n\nThere are Fundamentals Object in JavaScript\n\n\u003e Use new:\n\n* Object()\n* Array()\n* Function()\n* Date()\n* RegExp()\n* Error()\n\n\u003e Don't use new:\n\n* String()\n* Number()\n* Boolean()\n\n## Example \n\n```\nvar yesterday = new Date(\"March 6, 2019\");   \u003c--- Use \"new\"\nyesterday.toUTCString();\n\n// Wed, 06 Mar 2019 06:00:00 GMT   \n\nvar myGPA = String(transcript.gpa);   \u003c--- Don't use \"new\"\n\n// 3.54\n```\n## Exercises\n\n1. [First Exercise](https://github.com/devdezzies/Fundamentals-JavaScript/blob/main/Primer/primerExercise.md)\n2. [2nd Exercise](https://github.com/devdezzies/Fundamentals-JavaScript/blob/main/FinalExercise/Instructions.md)\n\n\u003e TIP TO SUCCEED IN THIS COURSE: REPEAT EVERY SINGLE EXERCISE AND START IT FROM SCRATCH AND MAKE SURE YOU UNDERSTAND!\n\u003e AND YOU ALSO CAN MAKE A FEW MODIFICATIONS TO TRY AS A EXPERIMENT\n\n**\"The best way to learn JS is to get it and write it!\" - Kyle Simpson**\n\n\n\n\n\n\n\n\n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdevdezzies%2Ffundamentals-javascript","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fdevdezzies%2Ffundamentals-javascript","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdevdezzies%2Ffundamentals-javascript/lists"}