Salesforce Certified JavaScript Developer (JS-Dev-101) JavaScript-Developer-I Exam Questions with Experts Answers Updated Recently

Refer to the code below (assuming Promise.race is intended):

let cat3 = new Promise(resolve = >

setTimeout(resolve, 3000, " Cat 3 completes " )

);

Promise.race([cat1, cat2, cat3])

.then(value = > {

let result = `${value} the race.`;

})

.catch(err = > {

console.log( " Race is cancelled: " , err);

});

(Assuming cat1 and cat2 are similar to earlier examples: cat2 resolves fastest.)

What is the value of result when Promise.race executes?

A developer creates a simple webpage with an input field. When a user enters text and clicks the button, the actual value must be displayed in the console:

HTML:

< input type= " text " value= " Hello " name= " input " >

< button type= " button " > Display < /button >

JavaScript:

01 const button = document.querySelector( ' button ' );

02 button.addEventListener( ' click ' , () = > {

03 const input = document.querySelector( ' input ' );

04 console.log(input.getAttribute( ' value ' ));

05 });

When the user clicks the button, the output is always " Hello " .

What needs to be done to make this code work as expected?

Function to test:

01 const sum3 = (arr) = > {

02 if (!arr.length) return 0;

03 if (arr.length === 1) return arr[0];

04 if (arr.length === 2) return arr[0] + arr[1] ;

05 return arr[0] + arr[1] + arr[2];

06 };

Which two assert statements are valid tests for this function?

static delay = async delay = > {

return new Promise(resolve = > {

setTimeout(resolve, delay);

});

};

static asyncCall = async () = > {

await delay(1000);

console.log(1);

};

console.log(2);

asyncCall();

console.log(3);

Assume delay and asyncCall are in scope as functions.

What is logged to the console?