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Customization in JavaScript (ES5) DateTimePicker control

18 May 2022 / 2 minutes to read

The DateTimePicker is available for UI customization that can be achieved by using available properties and events in the component.

Day and Time Cell format

The DateTimePicker is available for UI customization based on your application requirements. It can be achieved by using renderDayCell event that provides an option to customize each day cell on rendering.

The following example disables the weekends of every month by using renderDayCell event.

Source
Preview
index.js
index.html
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var datetimepicker = new ej.calendars.DateTimePicker({
        placeholder: 'Select a date and time'
    });
    datetimepicker.appendTo('#element');
    document.onkeyup = function (e) {
    if (e.altKey && e.keyCode === 84 /* t */) {
        // press alt+t to focus the component.
        datetimepicker.element.focus();
    }
};
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<!DOCTYPE html><html lang="en"><head>
    <title>Essential JS 2 DateTimePicker control</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="styles.css" rel="stylesheet">
    <!--style reference from the DateTimePicker component-->
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
<script src="https://cdn.syncfusion.com/ej2/20.1.55/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <input id="element" type="text">
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Adding mandatory asterisk to placeholder and float label

You can add a mandatory asterisk(*) to placeholder and float label using .e-input-group.e-control-wrapper.e-float-input .e-float-text::after class.

Source
Preview
index.js
index.html
asterisk.css
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var datetimepicker = new ej.calendars.DateTimePicker({
        placeholder: 'Select DateTime'
    });
    datetimepicker.appendTo('#element');
Copied to clipboard
<!DOCTYPE html><html lang="en"><head>
    <title>Essential JS 2 DateTimePicker control</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="asterisk.css" rel="stylesheet">
    <!--style reference from the DateTimePicker component-->
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
<script src="https://cdn.syncfusion.com/ej2/20.1.55/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <input id="element" type="text">
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>
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#container {
    visibility: hidden;
    max-width: 250px;
    margin: 0 auto;
}

#loader {
    color: #008cff;
    height: 40px;
    width: 30%;
    position: absolute;
    top: 45%;
    left: 45%;
}

#element {
    display: block;
}

.e-input-group.e-control-wrapper.e-float-input .e-float-text::after {
    content: '*';
    color: red;
}

See Also