TIL: Today I Learned37 [TIL] 20201125 JavaScript Basics Primitive Types Number String Boolean Null Undefined Symbol BigInt JavaScript Numbers JavaScript has ONE number type Math operations add : + subtraction : - multiplication : * division : / modulo(remainder operator) : % exponentiation : ** NaN "Not a Number" NaN is a numeric value that represents something that is not a number. ex) 0/0, 1+NaN Variables Labels for values Basic Syntax let x = valu.. 2020. 11. 25. [TIL] 20201124 CSS Frameworks: Bootstrap Bootstrap CSS Framework Framework : Helps speed up the process. Bootstrap It helps developers quickly create nice looking, responsive modern websites so we don't have to write a smuch CSS. Has components(ex. nav bar, buttons...) and Grid System(responsive pre-set grid). Including Bootstrap Can be included using CDN (no download needed) In real production application, it would be more stable to d.. 2020. 11. 24. [TIL] 20201123 Responsive CSS & Flexbox Flexbox A one-dimensional layout method for laying out items in rows or columns. Recent addition to CSS, included to address common layout frustrations. Flebox allows us to distribute space dynamically across elements of an unknown size, hence the term "flex". To Start Using Flexbox Include 'display: flex'. The Flex Model default: flex-direction Values row(default, left to right) row-reverse(rig.. 2020. 11. 23. [TIL] 20201121 Other Assorted Useful CSS Properties Opacity & The Alpha Channel Alpha Channel rgba (r, g, b, a) r, g, b : value from 0 to 255 a : value from 0 to 1 (0 is transparent, 1 is opique) Hex color #rrggbbaa a : value from 00 to ff (0 is transparent, ff is opique) Affects only the background-color, when applied. opacity value from 0 to 1 Applys to the entire element, including text and button. The Position Property Sets how an element is .. 2020. 11. 21. [TIL] 20201116 The CSS Box Model Box Model Every element in CSS is a box. Width & Height /*example*/ div { width: 200px; height: 200px; } Border Properties Individual Properties border-width: controls the thickness of the border. border-color: controls the color of the border. border-style: controls the line style - dashed, solid, etc. border (shorthand) #one { border-width: 5px; border-color: black; border-style: solid; box-si.. 2020. 11. 16. [TIL] 20201113 The World of CSS Selectors Universal Selectors Selects every possible element on the page * { color: black; } Element Selectors Selects a specific kind of elements on the page button { font-size: 30px; } // choose both h1 and h2 h1, h2 { color: olive; } ID Selectors ID attributes can be used as selectors to single out an element ID is a unique identifier for a single element. #id { color: olive; } Class Selectors Class : .. 2020. 11. 13. [TIL] 20201109 CSS: The Very Basics What is CSS? CSS Cascading Style Sheets A language for describing how documents are presented visually - how they are arranged and styled. Allows us to style and manipulate the visual representation of the HTML content on the page. CSS Rules Almost everything done in CSS follows the basic pattern: selector { property: value; } //examples h1 { color: purple; } img { width: 100px; height: 200px; }.. 2020. 11. 9. [TIL] 20201107 HTML: Forms & Tables Table What are tables? Structured sets of data, made up of rows and columns Early Usage In the early days of the web, tables were commonly used to create page layouts. Today, you should only use th etable element when you are creating an actually data table. elements & attributes table header defines a cell as header of a group of table cells. table row defines a row of cells in a table. table d.. 2020. 11. 7. [TIL] 20201106 HTML: Next Steps & Semantics The latest evolution of the standard that defines HTML. It includes new elements & features for browsers to implement. A new version o fthe language HTML, with new elements, attributes, and behaviors. A larger set of technologies that allows the building of more diverse and powerful websites and applications. Living Standard : The HTML standard is a document that describes how HTML should work. .. 2020. 11. 7. [TIL] 20201101 HTML: The essentials (2) HTML Boilerplate HTML Skeleton = Boilerplate Standardized markup that needs to go in every single html page Flag for the browser : "I'll use the lastest version of html." No closing tag Represents the root (top-level element) of an HTML document, so it is also referred to as the root element. Document metadata element Contains things that don't show up on the page. What goes on the tap of the br.. 2020. 11. 2. [TIL] 20201030 How to Git youtu.be/SWYqp7iY_Tc * Contents below are summary of the video above. What is Git? - Version Control System (VCS) for tracking changes in computer files - Created in 2005 by Linus Torvalds, creator of Linux - Distributed version control : de-centralized (developers don't have to be in the same network) - Coordinates work between multiple developers - Who made what changes and when - Revert back .. 2020. 10. 30. [TIL] 20201028 HTML: The essentials (1) HTML Mark up language First created to describe the structure of academic research papers. HTML Elements To write HTML, we pick from a set of standard element that all browsers recognise. common elements include: : represents a paragraph of text : represents the main header on a page : embeds an image : represents a form HTML Tags Elements are created by writing tags. Most (but not all) elements.. 2020. 10. 28. 이전 1 2 3 4 다음
