Utilizing constants within if statements in JavaScript/TypeScript

When working with PHP, it is common practice to declare variables inside if statement parenthesis like so:

if ($myvar = myfunction()) {
  // perform actions using $myvar
}

Is there an equivalent approach in JavaScript or TypeScript?:

if (const myvar = myfunction()) {
    // perform actions using myvar
}

Answer â„–1

Sorry, it's not possible to achieve that using JavaScript.

To make it work, you have to ensure your const is declared outside of the if statement:

const myvar = myfunction();

if (myvar) {
  // Perform actions with myvar
}

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