如何使用没有花括号的 if 来编写较短的箭头 function

Question

I want this but in fewer lines using arrows

 console.log([1, 2, 3, 4].every( value => { if (value > 0) { return 1 } }))

output: true

It is working fine but when I tried to reduce the lines as below code it is not working is there any way to do it, is it not possible to write a single if statement without using any ternary

console.log([1, 2, 3, 4].every(value =>
  if (value > 0) 1)
);

output :  /tmp/main.js:1
console.log([1,2,3,4].every(value=> if(value>0) 1)) 
                                    ^^

SyntaxError: Unexpected token 'if'
    at Module._compile (internal/modules/cjs/loader.js:892:18)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:973:10)
    at Module.load (internal/modules/cjs/loader.js:812:32)
    at Function.Module._load (internal/modules/cjs/loader.js:724:14)
    at Function.Module.runMain (internal/modules/cjs/loader.js:1025:10)
    at internal/main/run_main_module.js:17:11

[Program exited with exit code 1]

Is it possible to return anything apart from true or false using arrow operator like this? I want to return awesome but it is throwing me an error.

k=val=>val>0 "awesome";
console.log(k(2))
k=val=>val>0 "awesome";
             ^^^^^^^^^

SyntaxError: Unexpected string
    at Module._compile (internal/modules/cjs/loader.js:892:18)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:973:10)
    at Module.load (internal/modules/cjs/loader.js:812:32)
    at Function.Module._load (internal/modules/cjs/loader.js:724:14)
    at Function.Module.runMain (internal/modules/cjs/loader.js:1025:10)
    at internal/main/run_main_module.js:17:11

I tried to ask this question which is based on arrow function but someone told me to ask the question separately, that's why I'm asking here.

Answer 1

You can do it in the following way

 console.log([1, 2, 3, 4].every(value => value > 0))

Answer 2

 console.log([1, 2, 3, 4].every(value => value > 0)? "awesome": null)

Answer 3

Yes, you can use if statements inside arrow functions.

Example

 function wait() { return new Promise((resolve) => { setTimeout(() => resolve(1), 5000); }); } async function main() { wait().then((a) => { if (a == 1) console.log(`Yes`); else console.log(`Nope`) }) } main();