Maintain trailing zeros in NumericTextBox in JavaScript NumericTextBox control

08 May 2023 / 1 minute to read

By default, trailing zeros disappear when the NumericTextBox gets focus. However, you can use the following sample to maintain the trailing zeros while focusing the NumericTextBox.

Source

Preview

app.ts

index.html

styles.css

import {NumericTextBox} from '@syncfusion/ej2-inputs';
//maintains trailing zeros while focusing
let numericFocus: function () {
    var numericObj = this.ej2_instances ? this.ej2_instances[0] : this;
    numericObj.element.value = numericObj.formattedValue(numericObj.decimals, +numericObj.element.value);
}
// Render the Numeric Textbox
let numeric: NumericTextBox = new NumericTextBox({
    value: 10,
    decimals:2,
    format: 'n2',
    placeholder: 'NumericTextbox',
    floatLabelType: 'Always' ,
    change: numericFocus
});
numeric.appendTo('#numeric');
document.getElementById('numeric').addEventListener('focus', numericFocus);

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 NumericTextBox</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="TypeScript NumericTextBox Component to maintain trailing zeros" />
    <meta name="author" content="Syncfusion" />
    <link href="styles.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-inputs/styles/material.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>
<body>
     <div id='loader'>Loading....</div>
     <div id='container'>
        <div class='wrap'>
          <input id="numeric" type="text" />
        </div>
     </div>
</body>
</html>

#container {
    visibility: hidden;
}

#loader {
  color: #008cff;
  font-family: 'Helvetica Neue','calibiri';
  font-size: 14px;
  height: 40px;
  left: 45%;
  position: absolute;
  top: 45%;
  width: 30%;
}

.wrap {
  margin: 35px auto;
  width: 240px;
  padding-top:100px;
}