Add Floating Label to TextBox Programmatically in JavaScript TextBox control

08 May 2023 / 2 minutes to read

The Floating Label TextBox floats label above the TextBox after focusing, or entering a value in the TextBox.

Floating label supports the types of actions as given below.

Type	Description
Auto	The floating label will float above the input after focusing, or entering a value in the input.
Always	The floating label will always float above the input.
Never	By default, never float the label in the input when the placeholder is available.

Create a TypeScript file and import the Input modules from ej2-inputs library as shown below.

import {Input} from '@syncfusion/ej2-inputs';

Pass the HTML Input element and floatLabelType property as Auto to the createInput method.
Set the placeholder value to the input element via element attribute or pass the parameter to the createInput method.

The watermark label will be updated based on the specified placeholder value of the Floating Label TextBox.

You can add the icons on the input by passing buttons property value with the class name e-input-group-icon as parameter to the createInput method.

Source

Preview

index.ts

index.html

index.css

// To get the all input fields and its container.

let inputElement = document.querySelectorAll('.e-input-group .e-input,.e-float-input.e-input-group input');

// Add 'e-input-focus' class to the input for achive ripple effect when focus on the input field.

for (let i = 0; i < inputElement.length; i++) {
    inputElement[i].addEventListener("focus", function () {
        this.parentNode.classList.add('e-input-focus')
    });
    inputElement[i].addEventListener("blur", function () {
        this.parentNode.classList.remove('e-input-focus')
    });
}

// To get the all icon elements on the input field.

var inputIcon = document.querySelectorAll('.e-input-group-icon');

// Add 'e-input-btn-ripple' class to the icon element for achive ripple effect when click on the icon.

for (let i = 0; i < inputIcon.length; i++) {
    inputIcon[i].addEventListener('mousedown', function () {
        this.classList.add('e-input-btn-ripple');
    });
    inputIcon[i].addEventListener('mouseup', function () {
        var element = this;
        setTimeout(function () {
            element.classList.remove('e-input-btn-ripple');
        }, 500);
    });
}


import { Input, InputObject } from  '@syncfusion/ej2-inputs';
import { enableRipple } from '@syncfusion/ej2-base';

enableRipple(true);

let inputObj: InputObject;

let element: HTMLInputElement = <HTMLInputElement>document.createElement('input');
document.getElementById('input-container').appendChild(element);
Input.createInput({
element: element,
floatLabelType: "Auto",
properties:{
    placeholder:'Enter Name'
}
});

let element2: HTMLInputElement = <HTMLInputElement>document.createElement('input');
document.getElementById('input-container-01').appendChild(element2);
Input.createInput({
element: element2,
floatLabelType: "Always",
properties:{
    placeholder:'Enter Name'
}
});

let element3: HTMLInputElement = <HTMLInputElement>document.createElement('input');
document.getElementById('input-container-02').appendChild(element3);
Input.createInput({
element: element3,
floatLabelType: "Never",
properties:{
    placeholder:'Enter Name'
}
});

// Render float label TextBox with icon

let element4: HTMLInputElement = <HTMLInputElement>document.createElement('input');
document.getElementById('input-container-03').appendChild(element4);
Input.createInput({
element: element4,
floatLabelType: "Auto",
buttons: ['e-input-group-icon e-input-down'],
properties:{
    placeholder:'Enter Value'
}
});

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

<head>
            
    <title>Essential JS 2 TextBox</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Essential JS 2 TextBox Components" />
    <meta name="author" content="Syncfusion" />
    <link href="index.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'>
          <div id="input-container">
              <h4> FloatLabelType as Auto </h4>
          </div>
          <div id="input-container-01">
              <h4> FloatLabelType as Always </h4>
          </div>
          <div id="input-container-02">
              <h4> FloatLabelType as Never </h4>
          </div>
          <div id="input-container-03">
              <h4> Float label input with icons </h4>
          </div>
        </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 {
  box-sizing: border-box;
  margin: 0 auto;
  padding: 20px 10px;
  width: 260px;
}

.e-input-group-icon:before {
  font-family: e-icons;
}

.e-input-group .e-input-group-icon.e-input-popup-date { /* csslint allow: adjoining-classes */
  font-size:16px;
}

.e-input-group-icon.e-input-popup-date:before { /* csslint allow: adjoining-classes */
  content: "";
}

.e-input-group-icon.e-input-up:before { /* csslint allow: adjoining-classes */
  content: '\e85e';
}

.e-input-group-icon.e-input-down:before { /* csslint allow: adjoining-classes */
  content: "";
}

.e-input-group-icon.e-input-plus:before { /* csslint allow: adjoining-classes */
  content: '\e7ba';
}

.e-input-group-icon.e-input-minus:before { /* csslint allow: adjoining-classes */
  content: '\e814';
}

.e-input-group-icon.e-input-date:before { /* csslint allow: adjoining-classes */
  content: "";
}

.e-input-group-icon.e-input-left:before { /* csslint allow: adjoining-classes */
  content: '\e904';
}

.e-input-group-icon.e-input-right:before { /* csslint allow: adjoining-classes */
  content: '\e913';
}

.e-input-group-icon.e-input-reload:before { /* csslint allow: adjoining-classes */
  content: '\e837';
}

.e-input-group-icon.e-input-search:before { /* csslint allow: adjoining-classes */
  content: '\e806';
}

#input-container-03 .e-input-group { /* csslint allow: adjoining-classes */
  margin: 30px 0;
}

#input-container-03 .e-float-input { /* csslint allow: adjoining-classes */
  margin: 30px 0;
}

Please provide additional information

Thank you for your feedback and comments.We will rectify this as soon as possible!