Strict mode in EJ2 TypeScript Datepicker control

26 Apr 20236 minutes to read

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

The following example demonstrates the DatePicker in strictMode with min/max range of 5th to 25th in a month of May. Here, it allows to enter
only the valid date within the specified range. If you are trying to enter the out-of-range value as like 28th of May, then the value will set to the max date of 25th May. Since the value 28th is greater than to max value of 25th. Or else if you are trying to enter the invalid date, then the value will stay with the previous value.

import { DatePicker } from '@syncfusion/ej2-calendars';
// creates a datepicker with strictMode property
let datepickerObject: DatePicker = new DatePicker({
    // sets the strictMode
    strictMode: true,
    // sets the format
    format: 'dd/MM/yyyy',
    // sets the value
    value: new Date('5/28/2017'),
    //sets the min
    min: new Date('5/5/2017'),
    //sets the max
    max: new Date('5/25/2017')
});
datepickerObject.appendTo('#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Essential JS 2 DatePicker 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" />
    <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-calendars/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>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='loader'>LOADING....</div>
    <div id='container'>
        <input id='element' type="text" />
    </div>
</body>

</html>

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

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

import { DatePicker } from '@syncfusion/ej2-calendars';
// creates a datepicker with strictMode property
let datepickerObject: DatePicker = new DatePicker({
    // sets the value
    value: new Date('5/28/2017'),
    //sets the min
    min: new Date('5/5/2017'),
    //sets the max
    max: new Date('5/25/2017'),
    // sets the format
    format: 'dd/MM/yyyy',
    // sets the placeholder
    placeholder: 'Enter date'
});
datepickerObject.appendTo('#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Essential JS 2 DatePicker 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" />
    <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-calendars/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>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='loader'>LOADING....</div>
    <div id='container'>
        <input id='element' type="text" />
    </div>
</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.