Salesforce Salesforce Certifications JAVASCRIPT-DEVELOPER-I Questions & Answers

• Question 221:

  Refer to the code below:

  Let foodMenu1 = [`pizza', `burger', `French fries'];

  Let finalMenu = foodMenu1;

  finalMenu.push(`Garlic bread');

  What is the value of foodMenu1 after the code executes?

  A. [ `pizza','Burger', `French fires', `Garlic bread']

  B. [ `pizza','Burger', `French fires']

  C. [ `Garlic bread' , `pizza','Burger', `French fires' ]

  D. [ `Garlic bread']

  Correct Answer: B

• Question 222:

  developer has a web server running with Node.js. The command to start the web server is node server,js. The web server started having latency issues. Instead of a one second turn around for web requests, the developer now sees a five second turnaround

  Which command can the web developer run to see what the module is doing during the latency period?

  A. DEBUG = http, https node server.js

  B. NODE_DEBUG =http, https node server.js

  C. DEBUG =true node server.js

  D. NODE_DEBUG =true node server.js

  Correct Answer: C

• Question 223:

  A developer needs to test this function:

  01const sum3 = (arr) => (

  02if (!arr.length) return 0,

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

  04if (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 the function?

  Choose 2 answers

  A. console.assert(sum3(1, `2')) == 12);

  B. console.assert(sum3(0)) == 0);

  C. console.assert(sum3(-3, 2 )) == -1);

  D. console.assert(sum3(`hello', 2, 3, 4)) === NaN);

  Correct Answer: AC