[Solved] How to write an if statement in Javascript?

Question

You could defer the evaluation by collecting the values of the call.

And then look with Array#some and Boolean as callback if some value is truthy.

if ([checkPassword(), checkUserName()].some(Boolean)) {
    // ...
}

Accepted Answer

You could defer the evaluation by collecting the values of the call.

And then look with Array#some and Boolean as callback if some value is truthy.

if ([checkPassword(), checkUserName()].some(Boolean)) {
    // ...
}