JavaScript Developer I

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,...

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...

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

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...

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...

What are two unique features of functions defined with a fat arrow as compared to normal function definition? Choose 2 answersA . The function generated its own this making it useful for separating the function’s scope from its enclosing scope.B . The function receives an argument that is always in...

Refer to the code below: After running this code, which result is displayed on the console?A . > true > falseB . > 5 >undefinedC . > 5 > -1D . > 5 > 0View AnswerAnswer: B

Which three browser specific APIs are available for developers to persist data between page loads? Choose 3 answersA . IIFEsB . indexedDBC . Global variablesD . CookiesE . localStorage.View AnswerAnswer: A,B,E

Which statement phrases successfully?A . JSOB . parse ( ‘ foo ’ );C . JSOD . parse ( “ foo ” );E . JSOF . parse( “ ‘ foo ’ ” );G . JSOH . parse(‘ “ foo ” ’);View AnswerAnswer: D

Which statement parses successfully?A . JSOB . parse (""foo"');C . JSOD . parse (""foo'");E . JSOF . parse ("foo");G . JSOH . parse ("foo");View AnswerAnswer: A