Learn more. Asked 11 years, 10 months ago. Active 1 year, 7 months ago. Viewed k times. Improve this question. YOU what is CW?
Add a comment. Active Oldest Votes. Improve this answer. It is really the equivalent of if val , which is much clearer to read.
I would stick to that fyi Ujwal,!! Boolean val — thedjaney. I still like the way it looks though! It's not a simple double negative. It's a transforming double negative. You are basically transforming the variable to a boolean. There's a lot to say on the subject but suffice it to say that in cases where your variable is 0 , false , null , undefined or some such value that resolves to true with one! It should be used sparingly if at all.
Show 3 more comments. Strict Not Version if val! Non-strict Not Version if val! Double Not Version if!! It's very odd. I've got it now. I forgot to tell that I'm using typescript and I thought it's going to be similar, but there is no Object.
I did it with your tip about the stringified data. When I set the data to undefined and not null, they haven't been stringified which was great and easy! Thank you! Should the in the first code segment be : per typical ternary construction? Or is this some other sorcery that I'm unfamiliar with?
Depending on the JS version you are using, you can use the spread operator Jason Carmona Jason Carmona 3 3 silver badges 6 6 bronze badges. Non-inline solution If you don't need to add the value inline, it is pretty straightforward and clean to write your assignment like this. Gibolt Gibolt 30k 10 10 gold badges silver badges bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Providing no object like just a number , will throw an error: Object.
Logical nullish assignment?? Object initializer Operator precedence Optional chaining?.
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