How to apply data validation based JavaScript Spreadsheet?

This knowledge base explains you how to apply data validation based on the value selected from the DatePicker in JavaScript Spreadsheet. Render the DatePicker in the cell containing the date value using the beforeCellRender event. Apply data validation to the DatePicker control’s change event using the addDataValidation method.

[HTML]

 <div id="spreadsheet"></div> 

[TS]

let spreadsheet = new ej.spreadsheet.Spreadsheet({
 sheets: [
   {
     name: 'Car Sales Report',
     ranges: [{ dataSource: defaultData }],
     columns: [
       { width: 180 },
       { width: 130 },
       { width: 130 },
       { width: 180 },
       { width: 130 },
       { width: 120 },
     ],
   },
 ],
 created: function () {
   spreadsheet.cellFormat(
     { fontWeight: 'bold', textAlign: 'center', verticalAlign: 'middle' },
     'A1:F1'
   );
   // Method to bind the DatePicker to cells.
   bindDatePicker();
 },
 beforeCellRender: function (args) {
   // Condition to check the active sheet and the rendered cell is not header cell.
   if (
     spreadsheet.activeSheetIndex === 0 &&
     !args.element.classList.contains('e-header-cell')
   ) {
     // Render templates dynamically for date range cells.
     let target = args.element.firstElementChild;
     if (target) {
       // Convert the input element as an EJ2 DatePicker control.
       new ej.calendars.DatePicker(
         {
           placeholder: 'Delivery Date',
           value: spreadsheet.getDisplayText(args.cell),
           // Event that gets triggered when the value is changed.
           change: onDateChange,
         },
         target
       );
     }
   }
 },
});

spreadsheet.appendTo('#spreadsheet');

// Function for data picker change event.
function onDateChange(args) {
 let datePickerValue = args.value;
 let activeCell = spreadsheet.getActiveSheet().activeCell;
 let date = datePickerValue.toLocaleDateString();
 // Update the value to the cell model.
 spreadsheet.updateCell({ value: date, format: 'MM-dd-yyyy' }, activeCell);
 let cellIdx = ejs.spreadsheet.getRangeIndexes(activeCell);
 let cell = ejs.spreadsheet.getCell(
   cellIdx[0],
   cellIdx[1],
   spreadsheet.getActiveSheet()
 );
 // Fetching the current date.
 let today = new Date().toLocaleDateString();
 if (cell.format === 'MM-dd-yyyy') {
   // Apply validation to the cell.
   spreadsheet.addDataValidation({ type: 'Date', operator: 'LessThanOrEqualTo', value1: today, isHighlighted: true}, activeCell);
 }
}

function bindDatePicker() {
 let sheet = spreadsheet.getActiveSheet();
 let range = sheet.usedRange;
 let rangeCollection = [];
 // Iteration between the used range to update 
 for (let i = 0; i <= range.rowIndex; i++) {
   let cells = sheet.rows[i].cells;
   for (let j = 0; j <= range.colIndex; j++) {
     // Condition to check whether the fetched cell constains date value.
     if (cells[j] && cells[j].value && cells[j].format == 'mm-dd-yyyy') {
       let address = ejs.spreadsheet.getCellAddress(i, j);
       let ranges = {
         template: '<input />',
         address: address, // Specify the range you want.
       };
       rangeCollection.push(ranges);
     }
   }
 }
 spreadsheet.sheets[0].ranges = rangeCollection;
 spreadsheet.resize(); // To refresh the spreadsheet.
}

Sample Link:

https://stackblitz.com/edit/jc3drr-ytegjt?file=index.js

Output:

Documentation link:

https://ej2.syncfusion.com/javascript/documentation/spreadsheet/cell-range#data-validation

https://ej2.syncfusion.com/javascript/documentation/spreadsheet/template

https://ej2.syncfusion.com/javascript/documentation/datepicker/es5-getting-started

Demo link:

https://ej2.syncfusion.com/javascript/demos/#/material3/spreadsheet/cell-template.html

https://ej2.syncfusion.com/javascript/demos/#/material3/spreadsheet/data-validation.html

https://ej2.syncfusion.com/javascript/demos/#/material3/datepicker/default.html

Conclusion
I hope you enjoyed learning how to apply data validation based on the value selected from the DatePicker in JavaScript Spreadsheet.

You can refer to our
JavaScript Spreadsheet feature tour page to know about its other groundbreaking feature representations
documentation and how to quickly get started for configuration specifications. You can also explore our
JavaScript Spreadsheet example to understand how to create and manipulate data.

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