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Recursion
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| license: mit |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <style> | |
| body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
| </style> | |
| </head> | |
| <body> | |
| <script> | |
| // Feel free to change or delete any of the code you see in this editor! | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", 960) | |
| .attr("height", 500) | |
| svg.append("text") | |
| .text("Recursive Crusade") | |
| .attr("id","title") | |
| .attr("y", 50) | |
| .attr("x", 20) | |
| .attr("font-size", 28) | |
| .attr("font-weight", 500) | |
| .attr("fill", "teal") | |
| .attr("font-family", "monospace") | |
| svg.append("text") | |
| .text("") | |
| .attr("id", "result") | |
| .attr("y", 90) | |
| .attr("x", 30) | |
| .attr("font-size", 20) | |
| .attr("font-family", "monospace") | |
| svg.append("text") | |
| .text("...") | |
| .attr("id", "recursion") | |
| .attr("y", 120) | |
| .attr("x", 50) | |
| .attr("font-size", 20) | |
| .attr("font-family", "monospace") | |
| function removeDuplicateDates(arr, equals) { | |
| var originalArr = arr.slice(0); | |
| var i, len, j, val; | |
| arr.length = 0; | |
| for (i = 0, len = originalArr.length; i < len; ++i) { | |
| val = originalArr[i]; | |
| if (!arr.some(function(item) { return thingsEqual(item, val); })) { | |
| arr.push(val); | |
| } | |
| } | |
| } | |
| function thingsEqual(thing1, thing2) { | |
| const date1 = new Date(thing1.created_on); | |
| const date2 = new Date(thing2.created_on); | |
| return date1.getDate() === date2.getDate() | |
| && date1.getMonth() === date1.getMonth() | |
| && date1.getFullYear() === date1.getFullYear(); | |
| } | |
| const things = [ | |
| {created_on:"Fri, 06 Dec 2019 02:31:20 GMT",name:"sword"}, | |
| {created_on:"Fri, 07 Dec 2019 02:31:20 GMT",name:"shield"}, | |
| {created_on:"Fri, 08 Dec 2019 02:31:20 GMT",name:"mace"}, | |
| {created_on:"Fri, 08 Dec 2019 02:31:20 GMT",name:"mace"} | |
| ]; | |
| removeDuplicateDates(things, thingsEqual); | |
| const updateResult = ( id, result, color) => { | |
| d3.select(`#${id}`).text(result) | |
| if (color){ | |
| d3.select(`#${id}`).attr("fill", color) | |
| } | |
| } | |
| const str = things.map( thing => (thing.name)) | |
| updateResult("result", String(str)) | |
| // Resursion practice... | |
| const phrase = "As the cleric healed the wounded...".split(""); | |
| let sentence = ""; | |
| function walkPhrase(phrase, n) { | |
| if (n === 0) { | |
| return; | |
| } else { | |
| return setTimeout( () => { | |
| const bit = phrase[n-1]; | |
| sentence = bit + sentence; | |
| const color = n % 2 === 0 ? "pink" : "red"; | |
| updateResult("recursion", sentence, color); | |
| return walkPhrase(phrase, n - 1) | |
| }, 200) | |
| } | |
| } | |
| walkPhrase(phrase, phrase.length) | |
| </script> | |
| </body> |
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