ISREF function

PRO

The ISREF function in Jspreadsheet Formulas Pro is a tool that verifies if a certain value is a valid cell reference. If the value provided is indeed a valid cell reference, the function will return TRUE. However, if the value isn't valid or doesn't correspond to a cell reference, the function will return FALSE. This can be particularly useful when managing and organizing your data within Jspreadsheet.

Documentation

Checks if a given value is a valid cell reference and returns TRUE if the value is a valid cell reference, and FALSE otherwise.

Syntax

ISREF(value)

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

Behavior

The ISREF function checks whether a value is a reference. It returns TRUE if the value is a cell or range reference and FALSE if it is not. Here is how it behaves with different types of inputs:

Empty Cells: If the cell being referenced is empty, ISREF still returns TRUE because it's a valid reference.
Text: If the input is text that does not represent a valid cell or range reference, ISREF returns FALSE.
Booleans: Booleans are not considered as references, so ISREF will return FALSE.
Errors: If the cell being referenced contains an error, ISREF will return TRUE, as it is still a valid reference. However, if the argument itself is an error, ISREF will return that error.
Numbers: Like booleans, numbers are not considered as references, so ISREF will return FALSE.

Common Errors

Error	Description
#VALUE!	Occurs when the function does not recognize the reference. This usually means the argument is text that doesn't correspond to a cell or range.
#REF!	Occurs when the reference is invalid. This typically happens when a cell or range referenced in the formula has been deleted or moved.

Best practices

Always ensure that the reference provided to ISREF is valid. If you're not sure, double-check it.

Use ISREF to validate that a cell or range reference exists before using it in a formula to avoid errors.

Be aware that ISREF will return TRUE for a cell that contains an error. If you want to check for errors, consider combining ISREF with an error-checking function like ISERROR or IFERROR.

Since ISREF only checks if a value is a reference, not the value within the reference, it is often used in combination with other functions for more powerful data validation and error handling.

Usage

A few examples using the ISREF function.

ISREF(A1) returns TRUE because A1 is a valid cell reference  
ISREF("B2") returns FALSE because "B2" is not a valid cell reference  
ISREF(123) returns FALSE because 123 is not a valid cell reference.

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: [
    [
        "Value",
        "Is Reference?"
    ],
    [
        5,
        "=ISREF(A2)"
    ],
    [
        "B3",
        "=ISREF(A3)"
    ],
    [
        "=A1+A2",
        "=ISREF(A4)"
    ]
]
  }]
});
</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 = [
    [
        "Value",
        "Is Reference?"
    ],
    [
        5,
        "=ISREF(A2)"
    ],
    [
        "B3",
        "=ISREF(A3)"
    ],
    [
        "=A1+A2",
        "=ISREF(A4)"
    ]
];

    // 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 = [
    [
        "Value",
        "Is Reference?"
    ],
    [
        5,
        "=ISREF(A2)"
    ],
    [
        "B3",
        "=ISREF(A3)"
    ],
    [
        "=A1+A2",
        "=ISREF(A4)"
    ]
]

        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('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');

// 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: [
    [
        "Value",
        "Is Reference?"
    ],
    [
        5,
        "=ISREF(A2)"
    ],
    [
        "B3",
        "=ISREF(A3)"
    ],
    [
        "=A1+A2",
        "=ISREF(A4)"
    ]
]
            }]
        });
    }
}

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