Free Certified JavaScript Developer I Exam Braindumps
Salesforce Certified JavaScript Developer I Questions 71–75 (page: 16)

Refer to the code below:
Let str = `javascript';
Str[0] = `J';
Str[4] = 'S';
After changing the string indexvalues, the value of str is `javascript'.
What is the reason for this value:

Referto the code below:
new Promise((resolve, reject) => {
const fraction = Math.random();
if( fraction >0.5) reject("fraction > 0.5, " + fraction); resolve(fraction);
})
.then(() =>console.log("resolved"))
.catch((error) => console.error(error))
.finally(() =>console.log(" when am I called?"));



When does Promise.finally on line 08 get called?

Refer to the following array:
Let arr1 = [ 1,2, 3, 4, 5 ];



Which two lines of code result in a second array, arr2 being created such that arr2 is not a reference to arr1?

Refer to code below:
Function muFunction(reassign){
Let x = 1;
var y = 1;
if( reassign ) {
Let x= 2;
Var y = 2;
console.log(x);

console.log(y);}
console.log(x);
console.log(y);}

What is displayed when myFunction(true) is called?

A developer wants to create an object from a function in the browser using the code below:
Function Monster() { this.name = `hello' };
Const z = Monster();
What happens due to lackof the new keyword on line 02?