Input Field with Comma After Every 3 Digit in Amount using Javascript

HTML

CSS

Output

HTML Copied

CSS Copied

* {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

body {
      display: flex;
      justify-content: center;
      align-items: center;
    }

section {
      width: 100%;
      display: flex;
      justify-content: center;
    }

.heading {
      font-size: 24px;
      font-weight: 700;
      color: #333;
    }

.form-main-div {
      background: #fdfffd;
      border: 1px solid #07e4885d;
      box-shadow: 2px 2px 15px rgba(0, 0, 0, 0.03);
      border-radius: 8px;
      padding: 60px;
      text-align: center;
      margin-top: 30px;
      width: 640px;
    }

.form-inner-div {
      position: relative;
      width: 100%;
    }

.input-div {
      position: relative;
      max-width: 370px;
      margin: 0 auto;
      margin-top: 1rem;
    }

.input-div input {
      width: 100%;
      border: 1px solid #027a48;
      border-radius: 5px;
      height: 50px;
      padding: 0 1.5rem 0 3.5rem;
      font-size: 18px;
      color: #1f1f1f;
    }

.input-div input:focus {
      outline: none;
      box-shadow: none;
    }

.input-div input::placeholder {
      font-size: 18px;
      color: #B0B0B0;
    }

.input-div .auth-left-icon {
      position: absolute;
      left: 0;
      top: 0;
      width: 50px;
      height: 50px;
      background: #027a48;
      border: 1px solid #027a48;
      border-radius: 5px 0 0 5px;
      display: flex;
      justify-content: center;
      align-items: center;
      color: #fff;
      font-size: 32px;
      font-weight: 700;
    }

.clearInputIcon {
      position: absolute;
      top: 50%;
      right: 15px;
      transform: translateY(-50%);
      cursor: pointer;
    }

.form-inner-div .submitButton {
      width: 250px;
      height: 50px;
      background: #00d17a;
      border-radius: 8px;
      font-weight: 600;
      font-size: 20px;
      text-align: center;
      color: #FFFFFF;
      margin-top: 25px;
      border: 1.5px solid #00d17a;
      cursor: pointer;
    }

.form-inner-div .submitButton:hover {
      background: #ffffff;
      color: #00d17a;
    }

@media (max-width:672px) {
      .form-main-div {
        width: 100%;
        padding: 25px;
      }
    }

JS Copied

// Add Comma after 3 digit
         function updateTextView(_obj) {
            var num = getNumber(_obj.value);
            if (num == 0) {
                _obj.value = "";
            } else {
                _obj.value = num.toLocaleString();
            }
        }
        function getNumber(_str) {
            var arr = _str.split('');
            var out = new Array();
            for (var cnt = 0; cnt < arr.length; cnt++) {
                if (isNaN(arr[cnt]) == false) {
                    out.push(arr[cnt]);
                }
            }
            return Number(out.join(''));
        }
        document.querySelectorAll('.dollar_inp').forEach(function (eachDollarInp) {
            eachDollarInp.addEventListener('input', function () {
                updateTextView(event.target)
                var key = event.keyCode;
                // Only allow numbers to be entered
                if (key < 48 || key > 57) {
                    event.preventDefault();
                }
            })
        })