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HTML

              
                <div id="shop-wrap">
  <h1>MY SHOPPING LIST</h1>
  
  <!-- (A) ADD NEW ITEM -->
  <form id="shop-form">
    <input type="text" id="shop-item" placeholder="Item Name" required disabled/>
    <input type="submit" id="shop-add" value="Add" disabled/>
  </form>

  <!-- (B) SHOPPING LIST -->
  <div id="shop-list"></div>
</div>

<!-- (X) VISIT CODE-BOXX -->
<div id="code-boxx">
  Visit
  <a href="https://code-boxx.com/shopping-list-vanilla-javascript/"
     target="_blank">
    Code Boxx
  </a> for more details.
</div>
              
            
!

CSS

              
                /* (A) SHARED */
#shop-wrap, #shop-wrap > * { box-sizing: border-box; }
#shop-wrap input {
  padding: 10px;
  border: 0;
}
#shop-wrap input[type=button], #shop-wrap input[type=submit] {
  cursor: pointer;
  color: #fff;
  background: #5a75d6;
}
#shop-form, .item-row {
  display: flex;
  align-items: center;
}
#shop-item, .item-name { flex-grow: 1; }

/* (B) WRAPPER */
#shop-wrap {
  max-width: 500px;
  padding: 15px;
  margin: 0 auto;
}

/* (C) SHOPPING LIST */
.item-row { margin-top: 10px; }
.item-name {
  padding: 5px;
  background: #fff;
}
.item-name.item-got { background: #f5fffa; }
.item-name.item-got:before {
  content: "\02713";
  margin-right: 5px;
  font-weight: bold;
  color: #00d036;
}
.item-del { background: #de1919 !important; }

/* [DOES NOT MATTER] */
/* PAGE & BODY */
* { font-family: arial, sans-serif; }
body {
  min-height: 100vh;
  background-image: url(https://images.unsplash.com/photo-1603400521630-9f2de124b33b?crop=entropy&cs=srgb&fm=jpg&ixid=MnwxNDU4OXwwfDF8cmFuZG9tfHx8fHx8fHx8MTY0MTY5ODQyNA&ixlib=rb-1.2.1&q=85);
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
}

/* FOOTER */
#code-boxx {
  text-align: center;
  font-weight: 600;
  margin-top: 30px;
}
#code-boxx a {
  display: inline-block;
  padding: 5px;
  text-decoration: none;
  background: #b90a0a;
  color: #fff;
}
              
            
!

JS

              
                var slist = {
  // (A) INITIALIZE SHOPPING LIST
  items : [],   // current shopping list
  hform : null, // html add item <form>
  hitem : null, // html add item <input> field
  hadd : null,  // html add item submit button
  hlist : null, // html <div> shopping list
  init : () => {
    // (A1) GET HTML ELEMENTS
    slist.hform = document.getElementById("shop-form");
    slist.hitem = document.getElementById("shop-item");
    slist.hadd = document.getElementById("shop-add");
    slist.hlist = document.getElementById("shop-list");

    // (A2) "ACTIVATE" HTML ADD ITEM FORM
    slist.hitem.setAttribute("autocomplete", "off");
    slist.hform.onsubmit = slist.add;
    slist.hitem.disabled = false;
    slist.hadd.disabled = false;

    // (A3) RESTORE PREVIOUS SHOPPING LIST
    if (localStorage.items == undefined) { localStorage.items = "[]"; }
    slist.items = JSON.parse(localStorage.items);

    // (A4) DRAW HTML SHOPPING LIST
    slist.draw();
  },

  // (B) SAVE SHOPPING LIST INTO LOCAL STORAGE
  save : () => {
    if (localStorage.items == undefined) { localStorage.items = "[]"; }
    localStorage.items = JSON.stringify(slist.items);
  },

  // (C) ADD NEW ITEM TO THE LIST
  add : (evt) => {
    // (C1) PREVENT FORM SUBMIT
    evt.preventDefault();

    // (C2) ADD NEW ITEM TO LIST
    slist.items.push({
      name : slist.hitem.value, // item name
      done : false // true for "got it", false for "not yet"
    });
    slist.hitem.value = "";
    slist.save();

    // (C3) REDRAW HTML SHOPPING LIST
    slist.draw();
  },

  // (D) DELETE SELECTED ITEM
  delete : (id) => { if (confirm("Remove this item?")) {
    slist.items.splice(id, 1);
    slist.save();
    slist.draw();
  }},

  // (E) TOGGLE ITEM BETWEEN "GOT IT" OR "NOT YET"
  toggle : (id) => {
    slist.items[id].done = !slist.items[id].done;
    slist.save();
    slist.draw();
  },

  // (F) DRAW THE HTML SHOPPING LIST
  draw : () => {
    // (F1) RESET HTML LIST
    slist.hlist.innerHTML = "";

    // (F2) NO ITEMS
    if (slist.items.length == 0) {
      slist.hlist.innerHTML = "<div class='item-row item-name'>No items found.</div>";
    }

    // (F3) DRAW ITEMS
    else {
      for (let i in slist.items) {
        // ITEM ROW
        let row = document.createElement("div");
        row.className = "item-row";
        slist.hlist.appendChild(row);

        // ITEM NAME
        let name = document.createElement("div");
        name.innerHTML = slist.items[i].name;
        name.className = "item-name";
        if (slist.items[i].done) { name.classList.add("item-got"); }
        row.appendChild(name);

        // DELETE BUTTON
        let del = document.createElement("input");
        del.className = "item-del";
        del.type = "button";
        del.value = "Delete";;
        del.onclick = () => { slist.delete(i); };
        row.appendChild(del);

        // COMPLETED/NOT YET BUTTON
        let ok = document.createElement("input");
        ok.className = "item-ok";
        ok.type = "button";
        ok.value = slist.items[i].done ? "Not Yet" : "Got It";
        ok.onclick = () => { slist.toggle(i); };
        row.appendChild(ok);
      }
    }
  }
};
window.addEventListener("load", slist.init);

              
            
!
999px

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