Notes/index.js at master · dragno99/Notes · GitHub

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let btnAdd = document.getElementById("btnAdd");
showNotes();
btnAdd.addEventListener("click", function () {
  let txtArea = document.getElementById("txtArea");
  const txt = txtArea.value;
  let titleArea = document.getElementById("addTitle");
  const title = titleArea.value;
  if (txt && title) {
    txtArea.value = "";
    titleArea.value = "";
    addToLocalStorage(txt, title);
  }
});

// function to add item in local storage

function addToLocalStorage(txt, title) {
  let notesObj = localStorage.getItem("notes");
  if (notesObj) {
    notesObj = JSON.parse(notesObj);
  } else notesObj = [];
  notesObj.push({ note: txt, title: title });
  notesObj = JSON.stringify(notesObj);
  localStorage.setItem("notes", notesObj);
  showNotes();
}

// function to show notes

function showNotes() {
  let target = document.getElementById("main-container");
  let notesObj = localStorage.getItem("notes");
  if (notesObj == null) {
    notesObj = [];
  } else notesObj = JSON.parse(notesObj);
  let data = "";
  for (let i = notesObj.length - 1; i >= 0; i--) {
    data += `<div class="card my-3 mx-1" style="width: 18rem">
        <div class="card-body">
          <h5 class="card-title">${notesObj[i].title}</h5>
          <hr/>
          <p class="card-text mx-2">${notesObj[i].note}</p>
          <a id = "${i}" onclick="deleteFromLocalStorage(this.id)" class="btn btn-danger">Delete</a>
        </div>
      </div>`;
  }
  if (notesObj.length === 0) {
    data = "Add something to show...";
  }
  target.innerHTML = data;
}

// function to delete a single note using its id

function deleteFromLocalStorage(index) {
  let notesObj = localStorage.getItem("notes");
  notesObj = JSON.parse(notesObj);
  notesObj.splice(index, 1);
  notesObj = JSON.stringify(notesObj);
  localStorage.setItem("notes", notesObj);
  showNotes();
}

// add event listener to search button

let searchBtn = document.getElementById("searchBtn");
searchBtn.addEventListener("input", function (e) {
  const value = e.target.value.toLowerCase();
  if (value.length === 0) {
    showNotes();
    return;
  }
  let target = document.getElementById("main-container");
  let notesObj = localStorage.getItem("notes");
  if (notesObj == null) {
    notesObj = [];
  } else notesObj = JSON.parse(notesObj);
  let data = "";
  for (let i = notesObj.length - 1; i >= 0; i--) {
    if (notesObj[i].note.includes(value)) {
      data += `<div class="card my-3 mx-1" style="width: 18rem">
        <div class="card-body">
          <h5 class="card-title">${notesObj[i].title}</h5>
          <hr/>
          <p class="card-text mx-2">${notesObj[i].note}</p>
          <a id = "${i}" onclick="deleteFromLocalStorage(this.id)" class="btn btn-danger">Delete</a>
        </div>
      </div>`;
    }
  }
  if (data.length == 0) {
    data = "No match found...";
  }
  target.innerHTML = data;
});