first give an example:: const testFun = () = > {
let testParams
const sonFun = () => {
testParams = 3
}
console.log(testParams)}
how can I console the value of testParams if I write it like this?
first give an example:: const testFun = () = > {
let testParams
const sonFun = () => {
testParams = 3
}
console.log(testParams)}
how can I console the value of testParams if I write it like this?
first you have to execute the sonFun method before you can assign a value to testParams
you didn't perform this assignment at all
let testParams
const sonFun = () => {
testParams = 3
}
sonFun()
console.log(testParams)const testFun = () => {
let testParams
const sonFun = () => {
testParams = 3
}
sonFun()
console.log(testParams)
}
testFun()let testParams
const sonFun = () => {
testParams = 3
}
sonFun();
console.log(testParams)the scope of this arrow function is probably not withdrawn in this code
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