SET !

  1. const set1 = new Set([2,1,3]);
  2. const set2 = new Set([4,5,6,3]);

  4. let union = [...[...set1],...[...set2]];

  6. let t = new Set(union.sort( (a,b) => a-b));
trie un set ! 


début de MVC

 Le contrôleur

  1. class Controleur {

  constructor(view) {
    this.view = view;
    this.name = "control"
    this.bind();
  }

  bind() {
    console.log(this.name);
    this.view.bindAdd(()=>this.handlerAdd());
  }

  handlerAdd() {
    let data = new Date();
    this.view.handlerAdd(data);
  }
}
  2. c = new Controleur(new View());

 La view
  1. class View {

    constructor() {
        this.name = "view"
        this.bAdd = document.querySelector(".add");
        this.l = document.querySelector("ol");

    }

    handlerAdd(data) {
        console.dir(this.name);
        this.l.insertAdjacentHTML("afterbegin", `<li> ${data}</li>`);
    }

    bindAdd(handler) {
        this.bAdd.addEventListener("click", () => {
            console.log(this.name);
            handler();
        })
    }

}

 HTML
<body>
    <button class="add" name="buttonAdd" type="submit"> + </button>
    <ol></ol>
    <script src="view.js"></script>
    <script src="controleur.js"></script>
</body>

filter : thisarg

 

  1. function majeur( {born, sex} ) {

  2.   return (born < this.born  && sex == this.sex) }


  4. let f = {

  5.   sex : "f",

  6.   born : 2002,

  7. }


  9. let h = {

  10.   sex : "h",

  11.   born : 2000,

  12. }


  14. let hommesMajeur = tabPers.filter(majeur,h),

  15.      femmesMajeur = tabPers.filter(majeur,f);




code

trie multicritères

Table : API https://dupontdom.blogspot.com/2018/04/table-api.html

2020

Switch case en action

voici le test pour rechercher dans un string les caractère < ou >
  1.     switch (string.charCodeAt(index)) {
  2.        case 60: // <
  3.         escape = '&lt;';
  4.         break;
  5.       case 62: // >
  6.         escape = '&gt;';
  7.         break;
  8.       default:
  9.         continue;
  10.     }
code

module

ES6

  1. // List of the characters to escape 
  2. const chars = {
  3.     ">": "&gt;",
  4.     "<": "&lt;",
  5. };

  7. //  RegExp from the `chars` object
  8. const re = new RegExp(Object.keys(chars).join("|"), "g");

  10. // Return the escaped string
  11. const escapeHtml = (str = "") => String(str).replace(re, match => chars[match]);

  13. console.dir( escapeHtml('<div>'));


Filtre


  1. const filter = 

  3.   (fx, array) => array.reduce(

  5.     (acc, item) => fx(item) ? acc.concat(item) : acc, 

  7.   []);

  9. const greaterThan4 = (x) => x >= 4;

  11. const data   = [0, 1, 2, 3, 4, 5];

  13. let result = filter(greaterThan4, data);


code
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