- All Exams Instant Download
Which replacement for the conditional statement on line 02 allows a developer to correctly determine that a button on page is clicked?
Given the following code: document.body.addEventListener(‘ click ’, (event) => { if (/* CODE REPLACEMENT HERE */) { console.log(‘button clicked!’); ) }); Which replacement for the conditional statement on line 02 allows a developer to correctly determine that a button on page is clicked?A . Event.clickedB . e.nodeTarget ==thisC . event.target.nodeName...
Consider type coercion, what does the following expression evaluate to?
Consider type coercion, what does the following expression evaluate to? True + 3 + ‘100’ + nullA . 104B . 4100C . ‘3100null’D . ‘4100null’View AnswerAnswer: D
Which statement assigns the values sku 0000000008675309?
Refer to code below: Let productSKU = ‘8675309’ ; A developer has a requirement to generate SKU numbers that are always 19 characters lon, starting with ‘sku’, and padded with zeros. Which statement assigns the values sku 0000000008675309?A . productSKU = productSKB . padStart (19. ‘0’).padstart(‘sku’);C . productSKU = productSKD...
Which assertion accuretely tests the above code?
Refer to the code below: Async funct on functionUnderTest(isOK) { If (isOK) return ‘OK’ ; Throw new Error(‘not OK’); ) Which assertion accuretely tests the above code?A . Console.assert (await functionUnderTest(true), ‘ OK ’)B . Console.assert (await functionUnderTest(true), ‘ not OK ’)C . Console.assert (await functionUnderTest(true), ‘ not OK ’)D...
Which statement flattens myArray when it can be arbitrarily nested?
myArraym can have one level, two levels, or more levels. Which statement flattens myArray when it can be arbitrarily nested?A . myArray. reduce ((prev, curr) => prev.concat(curr) [ ]);B . myArray. join (","). split (",");C . [ ] .concat {. . .myArray) ;D . myArray.flat(Infinity);View AnswerAnswer: A
What is the value of the array after the code executes?
Refer to the code snippet below: Let array = [1, 2, 3, 4, 4, 5, 4, 4]; For (let i =0; i < array.length; i++){ if (array[i] === 4) { array.splice(i, 1); } } What is the value of the array after the code executes?A . [1, 2, 3, 4,...
In lines 04 and 08, which code allows the user to select an image from their local computer, and to display the image in the browser?
is below: <input type=”file” onchange=”previewFile()”> <img src=”” height=”200” alt=”Image Preview…”/> The JavaScript portion is: 01 function previewFile(){ 02 const preview = document.querySelector(‘img’); 03 const file = document.querySelector(‘input[type=file]’).files[0]; 04 //line 4 code 05 reader.addEventListener(“load”, () => { 06 preview.src = reader.result; 07 },false); 08 //line 8 code 09 } In lines...
Which two statement result in the word 'Sale'?
Refer of the string below: Const str = ‘sa;esforce’=; Which two statement result in the word 'Sale'? Choose 2 answersA . str, substring (0,5) ;B . str, substr(0,5) ;C . str, substring(1,5) ;D . str, substr(1,5) ;View AnswerAnswer: A,B
Which two statements could be inserted at line 17 to enable the function call on line 18?
Refer to the following code: 01 function Tiger(){ 02 this.Type = ‘Cat’; 03 this.size = ‘large’; 4 } 5 06 let tony = new Tiger(); 07 tony.roar = () =>{ 08 console.log(‘They’re great1’); 9 }; 10 11 function Lion(){ 12 this.type = ‘Cat’; 13 this.size = ‘large’; 14 } 15...
What are three key steps to implement this debounce function?
Universal Containers (UC) notices that its application that allows users to search for accounts makes a network request each time a key is pressed. This results in too many requests for the server to handle. Address this problem, UC decides to implement a debounce function on string change handler. What...
