JAVASCRIPT-DEVELOPER-I TEST DUMPS FREE - JAVASCRIPT-DEVELOPER-I ONLINE TRAINING MATERIALS

JavaScript-Developer-I Test Dumps Free - JavaScript-Developer-I Online Training Materials

JavaScript-Developer-I Test Dumps Free - JavaScript-Developer-I Online Training Materials

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Tags: JavaScript-Developer-I Test Dumps Free, JavaScript-Developer-I Online Training Materials, JavaScript-Developer-I Free Download, JavaScript-Developer-I Actual Test, JavaScript-Developer-I Questions Exam

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Salesforce Certified JavaScript Developer I Exam Sample Questions (Q71-Q76):

NEW QUESTION # 71
Which code statement below correctly persists an objects in local Storage ?

  • A. const setLocalStorage = ( jsObject) => {
    window.localStorage.connectObject(jsObject));
    }
  • B. const setLocalStorage = ( jsObject) => {
    window.localStorage.setItem(jsObject);
    }
  • C. const setLocalStorage = (storageKey, jsObject) => {
    window.localStorage.setItem(storageKey, JSON.stringify(jsObject));
    }
  • D. const setLocalStorage = (storageKey, jsObject) => {
    window.localStorage.persist(storageKey, jsObject);
    }

Answer: C


NEW QUESTION # 72
Given the JavaScript below:

Which code should replace the placeholder comment on line 05 to highlight accounts that match the search string'

  • A. 'yellow' : null
  • B. null : 'yellow'
  • C. 'yellow : 'none'
  • D. 'none1 : "yellow'

Answer: C


NEW QUESTION # 73
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 04 and 08, which code allows the user to select an image from their local computer , and to display the image in the browser?

  • A. 04 const reader = new FileReader();
    08 if (file) reader.readAsDataURL(file);
  • B. 04 const reader = new FileReader();
    08 if (file) URL.createObjectURL(file);
  • C. 04 const reader = new File();
    08 if (file) reader.readAsDataURL(file);
  • D. 04 const reader = new File();
    08 if (file) URL.createObjectURL(file);

Answer: A


NEW QUESTION # 74
A developer wrote the following code to test a sum3 function that takes in an array of numbers and returns the sum of the first three numbers in the array, and the test passes.
A different developer made changes to the behavior of sum3 to instead sum only the first two numbers present in the array.

Which two results occur when running this test on the updated sum3 function?
Choose 2 answers

  • A. The line 02 assertion passes.
  • B. The line 05 assertion fails.
  • C. The line 05 assertion passes.
  • D. The line 02 assertion fails.

Answer: A,B


NEW QUESTION # 75
Refer to the code below:
Const pi w 3.1415926;
What is the data type of pi?

  • A. Number
  • B. Decimal
  • C. Double
  • D. Float

Answer: A


NEW QUESTION # 76
......

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