Node js access variable inside async function [duplicate]

Question

I have the following function :

module.exports = {
    PDF_Function: function (url) {

        (async () => {
            console.log("Our URL => "+url);
            const url = 'http://localhost:81/site/products/travel/mpdf';
            const buffer = await Webpage.generatePDF(url);
           return '1';
        })();

    }
};

How can I access the URL value from PDF_Function: function (url) inside the async function, when I tried to console it I get the following error =>

(node:66420) UnhandledPromiseRejectionWarning: ReferenceError: Cannot access 'url' before initialization

@Adam Agreed, finding the right dupe. Let me fix that.

Praveen Kumar Purushothaman
– Praveen Kumar Purushothaman

2019-08-01 13:43:32 +00:00
Commented Aug 1, 2019 at 13:43 — Praveen Kumar Purushothaman
– Praveen Kumar Purushothaman, Commented Aug 1, 2019 at 13:43
@Adam Updated. Thanks.

Praveen Kumar Purushothaman
– Praveen Kumar Purushothaman

2019-08-01 13:43:53 +00:00
Commented Aug 1, 2019 at 13:43 — Praveen Kumar Purushothaman
– Praveen Kumar Purushothaman, Commented Aug 1, 2019 at 13:43

Arpit Kumar · Accepted Answer · 2019-08-01 13:44:43Z

0

You should avoid same variable names:

module.exports = {
        PDF_Function: function (urlAsArgument) {

            (async () => {
                console.log("Our URL => "+ urlAsArgument);
                const url = 'http://localhost:81/site/products/travel/mpdf';
                const buffer = await Webpage.generatePDF(url);
               return '1';
            })();

        }
    };

Your argument name in PDF_Function and a const name inside your async function were same.

I hope it will help.

edited Aug 1, 2019 at 13:44

answered Aug 1, 2019 at 13:40

Arpit Kumar

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4 Comments

Praveen Kumar Purushothaman Over a year ago

What's the change you have done?

Praveen Kumar Purushothaman Over a year ago

Ah great find... 😇

Arpit Kumar Over a year ago

The argument name and the const name (url) both were same.

Praveen Kumar Purushothaman Over a year ago

Yep, noticed it.

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