Strict mode in EJ2 JavaScript Datetimepicker control

26 Apr 20236 minutes to read

The strictMode is an act, that allows the user to enter only the valid date and time within the specified min/max range in textbox. If the input entered is invalid, then the component will stay with the previous value. Else, if the date and time is
out of range, then the component will set the date to the min/max value.

The following example demonstrates the DateTimePicker in strictMode with min/max range of 5/5/2019 2:00 AM to 5/25/2019 2:00 AM. Here, it allows to enter only the valid date and time within the specified range. If you are trying to enter the out-of-range value as
like 5/28/2019, then the value will set to the max value as 5/25/2019 2:00 AM. Since the value 28 is greater than to max value
of 25. Or else if you are trying to enter the invalid date, then the value will stay with the previous value.

var datetimepickerObject = new ej.calendars.DateTimePicker({
    // sets the value
    value: new Date('5/25/2017 4:00 PM'),
    //sets the min
    min: new Date('5/5/2017 2:00 PM'),
    //sets the max
    max: new Date('5/25/2017 3:00 PM'),
    // sets the placeholder
    placeholder: 'Select a date and time'
    });
    datetimepickerObject.appendTo('#element');
<!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="https://cdn.syncfusion.com/ej2/25.1.35/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
<script src="https://cdn.syncfusion.com/ej2/25.1.35/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.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>

By default, the DateTimePicker act in strictMode false state, that allows to enter the invalid or out-of-range datetime in textbox.

If the datetime is out-of-range or invalid, then the model value will be set to out of range datetime value or null respectively with highlighted error class to indicates the datetime is out of range or invalid.

The following example demonstrates the strictMode as false. Here, it allows to enter the valid or invalid value in textbox. If you are entering the out-of-range or invalid datetime value, then the model value will be set to out of range datetime value or null respectively with highlighted error class to indicates the datetime is out of range or invalid.

var datetimepickerObject = new ej.calendars.DateTimePicker({
    // sets the value
    value: new Date('5/25/2017 4:00 PM'),
    //sets the min
    min: new Date('5/5/2017 2:00 PM'),
    //sets the max
    max: new Date('5/25/2017 3:00 PM'),
    // sets the placeholder
    placeholder: 'Select a date and time'
    });
    datetimepickerObject.appendTo('#element');
<!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="https://cdn.syncfusion.com/ej2/25.1.35/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
<script src="https://cdn.syncfusion.com/ej2/25.1.35/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.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>

 If the value of min or max properties changed through code behind, then you have to update the value property to set within the range.