javascript - What is the use of var app = express(); in the process …
The express() syntax is the equivalent of saying new express(). It creates a new instance of express that you can then assign to a variable and interact with. That is why the standard creation pattern for Express is
How to use multiple IIFs condition in expression in SSRS Reports?
Feb 9, 2016 · This is how the IIF expression works. IIF(CND , DWT , DWF )CND = The condition that is checked: In your example: Len(First(Fields!cust1.value,"customername")) > 0 (or IsNothing(First(Fields!cust1.value,"customername")) but then you need to turn it around)
"EPERM: operation not permitted" on Windows with npm
I ran npm config set prefix /usr/local After running that command, When trying to run any npm commands on Windows OS I keep getting the below. Error: EPERM: operation not permitted, mkdir 'C:\\Prog...
Facing problem on importing express from express
May 17, 2022 · import and export are ES6 syntax. To enable ES6 modules in your NodeJS app add "type": "module" to your package.json file.
How can I validate an email address using a regular expression?
Over the years I have slowly developed a regular expression that validates most email addresses correctly, assuming they don't use an IP address as the server part.
Node.js (Express) error handling middleware with router
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Generate PDF with digital signature by nodejs - Stack Overflow
Recently, i tried to generate pdf by nodejs. And i finally found the PDFKit. That library is doing well,but i need to implement the part of digital signature. But most of implementation are for...
What does "Object reference not set to an instance of an object" …
Most of the time, when you try to assing value into object, and if the value is null, then this kind of exception occur.
Understanding The Modulus Operator % - Stack Overflow
Jul 8, 2013 · I understand the Modulus operator in terms of the following expression: 7 % 5 This would return 2 due to the fact that 5 goes into 7 once and then gives the 2 that is left over, however my confus...
How to fix "running scripts is disabled on this system"?
Nov 1, 2020 · This is because of Execution Policy. This defines how powershell scripts will run. In Default windows desktops, it is Restricted, not allowing any scripts (signed or unsigned) only interactive sessions.