ISNUMBER function

PRO BASIC

The ISNUMBER function in Jspreadsheet Formulas Pro is a tool that allows you to verify whether a certain value is a number. If the value you're checking is indeed a number, this function will give you a result of TRUE. However, if the value is not a number, it will return FALSE. This is a useful function when you need to ensure that specific data in your spreadsheet is numerical.

Documentation

Checks if a given value is a number and returns TRUE if the value is a number, and FALSE otherwise.

Syntax

ISNUMBER(value)

Parameter	Description
`value`	The value that you want to test.

Behavior

The ISNUMBER function checks if a cell contains a number, and returns TRUE if it does, and FALSE if it doesn't. Here's how it handles different data types:

Empty cells: If the cell is empty, ISNUMBER returns FALSE.
Text: If the cell contains text, ISNUMBER returns FALSE.
Booleans: If the cell contains a boolean value (TRUE or FALSE), ISNUMBER returns FALSE.
Errors: If the cell contains an error, ISNUMBER returns FALSE.
Numbers: If the cell contains a number, ISNUMBER returns TRUE.

Common Errors

Error	Description
`#VALUE!`	If the argument is invalid or improperly referenced `ISNUMBER` returns `#VALUE!` error.
`#NUM!`	If the argument to `ISNUMBER` is outside of the numeric range that Jspreadsheet can handle, it returns `#NUM!` error.
`#REF!`	If the cell reference provided is not valid, `ISNUMBER` returns a `#REF!` error.

Best practices

Use ISNUMBER to validate data and ensure that the data entered is numeric.

ISNUMBER can be combined with IF to provide outputs based on whether a cell contains a number or not.

Avoid referring to cells that might contain text, as it may result in #VALUE! errors.

Remember that ISNUMBER treats boolean values and errors as non-numeric.

Usage

A few examples using the ISNUMBER function.

ISNUMBER(123) ➜ TRUE // 123 is a number
ISNUMBER("banana") ➜ FALSE // text is not numeric
ISNUMBER(A1) ➜ TRUE if A1 contains a number, FALSE otherwise
ISNUMBER(3.14) ➜ TRUE // decimal numbers are valid
ISNUMBER("123") ➜ FALSE // a number stored as text is not considered numeric

Interactive Spreadsheet Demo

<html>
<script src="https://jspreadsheet.com/v11/jspreadsheet.js"></script>
<script src="https://jsuites.net/v5/jsuites.js"></script>
<link rel="stylesheet" href="https://jsuites.net/v5/jsuites.css" type="text/css" />
<link rel="stylesheet" href="https://jspreadsheet.com/v11/jspreadsheet.css" type="text/css" />

<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Material+Icons" />
<script src="https://cdn.jsdelivr.net/npm/@jspreadsheet/formula-pro/dist/index.min.js"></script>

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

<script>
// Set your JSS license key (The following key only works for one day)
jspreadsheet.setLicense('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');

// Set the extensions
jspreadsheet.setExtensions({ formula });

// Create a new spreadsheet
jspreadsheet(document.getElementById('spreadsheet'), {
  worksheets: [{
    data: [
    [
        "Product ID",
        "Price",
        "Is Number?"
    ],
    [
        12345,
        29.99,
        "=ISNUMBER(B2)"
    ],
    [
        "ABC123",
        45.5,
        "=ISNUMBER(B3)"
    ],
    [
        67890,
        "N/A",
        "=ISNUMBER(B4)"
    ],
    [
        "XYZ789",
        "Free",
        "=ISNUMBER(B5)"
    ]
]
  }]
});
</script>
</html>

import React, { useRef } from "react";
import { Spreadsheet, Worksheet, jspreadsheet } from "@jspreadsheet/react";
import formula from "@jspreadsheet/formula-pro";
import "jsuites/dist/jsuites.css";
import "jspreadsheet/dist/jspreadsheet.css";

// Set license
jspreadsheet.setLicense('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');

// Set the extensions
jspreadsheet.setExtensions({ formula });

export default function App() {
    // Spreadsheet array of worksheets
    const spreadsheet = useRef();

    // Worksheet data
    const data = [
    [
        "Product ID",
        "Price",
        "Is Number?"
    ],
    [
        12345,
        29.99,
        "=ISNUMBER(B2)"
    ],
    [
        "ABC123",
        45.5,
        "=ISNUMBER(B3)"
    ],
    [
        67890,
        "N/A",
        "=ISNUMBER(B4)"
    ],
    [
        "XYZ789",
        "Free",
        "=ISNUMBER(B5)"
    ]
];

    // Render component
    return (
        <Spreadsheet ref={spreadsheet}>
            <Worksheet data={data} />
        </Spreadsheet>
    );
}

<template>
    <Spreadsheet ref="spreadsheet">
        <Worksheet :data="data" />
    </Spreadsheet>
</template>

<script>
import { Spreadsheet, Worksheet, jspreadsheet } from "@jspreadsheet/vue";
import "jsuites/dist/jsuites.css";
import "jspreadsheet/dist/jspreadsheet.css";
import formula from "@jspreadsheet/formula-pro";

// Set license
jspreadsheet.setLicense('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');

// Set the extensions
jspreadsheet.setExtensions({ formula });

export default {
    components: {
        Spreadsheet,
        Worksheet,
    },
    data() {
        // Worksheet data
        const data = [
    [
        "Product ID",
        "Price",
        "Is Number?"
    ],
    [
        12345,
        29.99,
        "=ISNUMBER(B2)"
    ],
    [
        "ABC123",
        45.5,
        "=ISNUMBER(B3)"
    ],
    [
        67890,
        "N/A",
        "=ISNUMBER(B4)"
    ],
    [
        "XYZ789",
        "Free",
        "=ISNUMBER(B5)"
    ]
]

        return {
            data
        };
    }
}
</script>

import { Component, ViewChild, ElementRef } from "@angular/core";
import jspreadsheet from "jspreadsheet";
import * as formula from "@jspreadsheet/formula-pro";

// Set your JSS license key (The following key only works for one day)
jspreadsheet.setLicense('NWQyMDgwYWVkZWQ2ZTQ4ZDVmZDZiMzQxMDhjY2I0MWRkZjg2NzcwZjY4MTczZTlmZGY1Zjk2OGNlNGFmNWMwNjdlNzVkZWEzODhmYmEzNjQxMjM0MGQ2OTVmYzc2ZDljNWUzMDU4OTcxNTgyMzVkNTBiMzk1Y2M2ZGYzNTEwN2EsZXlKamJHbGxiblJKWkNJNklpSXNJbTVoYldVaU9pSktjM0J5WldGa2MyaGxaWFFpTENKa1lYUmxJam94TnpVMk56a3pNRGd4TENKa2IyMWhhVzRpT2xzaWFuTndjbVZoWkhOb1pXVjBMbU52YlNJc0ltTnZaR1Z6WVc1a1ltOTRMbWx2SWl3aWFuTm9aV3hzTG01bGRDSXNJbU56WWk1aGNIQWlMQ0p6ZEdGamEySnNhWFI2TG1sdklpd2lkMlZpWTI5dWRHRnBibVZ5TG1sdklpd2lkMlZpSWl3aWJHOWpZV3hvYjNOMElsMHNJbkJzWVc0aU9pSXpOQ0lzSW5OamIzQmxJanBiSW5ZM0lpd2lkamdpTENKMk9TSXNJbll4TUNJc0luWXhNU0lzSW1Ob1lYSjBjeUlzSW1admNtMXpJaXdpWm05eWJYVnNZU0lzSW5CaGNuTmxjaUlzSW5KbGJtUmxjaUlzSW1OdmJXMWxiblJ6SWl3aWFXMXdiM0owWlhJaUxDSmlZWElpTENKMllXeHBaR0YwYVc5dWN5SXNJbk5sWVhKamFDSXNJbkJ5YVc1MElpd2ljMmhsWlhSeklpd2lZMnhwWlc1MElpd2ljMlZ5ZG1WeUlpd2ljMmhoY0dWeklpd2labTl5YldGMElsMHNJbVJsYlc4aU9uUnlkV1Y5');

// Set the extensions
jspreadsheet.setExtensions({ formula });

@Component({
    standalone: true,
    selector: "app-root",
    template: `<div #spreadsheet></div>`
})
export class AppComponent {
    @ViewChild("spreadsheet") spreadsheet: ElementRef;
    // Worksheets
    worksheets: jspreadsheet.worksheetInstance[];

    // Create a new data grid
    ngAfterViewInit() {
        // Create spreadsheet
        this.worksheets = jspreadsheet(this.spreadsheet.nativeElement, {
            worksheets: [{
                data: [
    [
        "Product ID",
        "Price",
        "Is Number?"
    ],
    [
        12345,
        29.99,
        "=ISNUMBER(B2)"
    ],
    [
        "ABC123",
        45.5,
        "=ISNUMBER(B3)"
    ],
    [
        67890,
        "N/A",
        "=ISNUMBER(B4)"
    ],
    [
        "XYZ789",
        "Free",
        "=ISNUMBER(B5)"
    ]
]
            }]
        });
    }
}

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