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Set the disabled state

Disable the TextBox by adding the e-disabled to the input parent element and set disabled attribute to the input element.

Source
Preview
index.html
index.ts
<!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/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/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">



        <input class="e-input" type="text" placeholder="Enter Name" disabled/>

        <div class="e-float-input e-disabled">
            <input type='text' required  disabled/>
            <span class="e-float-line"></span>
            <label class="e-float-text">Enter Name</label>
        </div>




          </div>
        </div>
    </div>
</body>
</html>
// 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', () => {
        let parentElement = this.parentNode;
        if (parentElement.classList.contains('e-input-in-wrap')) {
            parentElement.parentNode.classList.add('e-input-focus');
        } else {
            this.parentNode.classList.add('e-input-focus');
        }
    });
    inputElement[i].addEventListener('blur', () => {
        let parentElement = this.parentNode;
        if (parentElement.classList.contains('e-input-in-wrap')) {
            parentElement.parentNode.classList.remove('e-input-focus');
        } else {
            this.parentNode.classList.remove('e-input-focus');
        }
    });
}