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[General] Formats of ValidVCE Updated Salesforce JavaScript-Developer-I Exam Practice Ques

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【General】 Formats of ValidVCE Updated Salesforce JavaScript-Developer-I Exam Practice Ques

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Salesforce Certified JavaScript Developer I Exam Sample Questions (Q188-Q193):NEW QUESTION # 188
A developer implements and calls the following code when an application state change occurs:
Const onStateChange =innerPageState) => {
window.history.pushState(newPageState, ' ', null);
}
If the back button is clicked after this method is executed, what can a developer expect?
  • A. The page reloads and all Javascript is reinitialized.
  • B. A navigate event is fired with a state property that details the previous application state.
  • C. A popstate event is fired with a state property that details the application's last state.
  • D. The page is navigated away from and the previous page in the browser's history is loaded.
Answer: D

NEW QUESTION # 189
A developer creates a generic function to log custom messages in the console. To do this, the function below is implemented.
01 function logStatus(status){
02 console./*Answer goes here*/{'Item status is: %s', status};
03 }
Which three console logging methods allow the use of string substitution in line 02?
  • A. Message
  • B. Log
  • C. Assert
  • D. Info
  • E. Error
Answer: B,C,D

NEW QUESTION # 190
Refer to the code below:
for(let number =2 ; number <= 5 ; number += 1 ) {
// insert code statement here
}
The developer needs to insert a code statement in the location shown. The code statement has these requirements:
1. Does require an import
2. Logs an error when the boolean statement evaluates to false
3. Works in both the browser and Node.js
Which meet the requirements?
  • A. console.assert(number % 2 === 0);
  • B. assert (number % 2 === 0);
  • C. console.error(number % 2 === 0);
  • D. console.debug(number % 2 === 0);
Answer: C

NEW QUESTION # 191
Refer the code below.
x=3.14;
function myfunction() {
"use strict";
y=x;
}
z=x;
myFunction();
Answer:
Explanation:
See the Answer below in explanation:
Explanation
Z is equal to 3.14
Use strict has effect only on line 5.
Line 5 throws an error

NEW QUESTION # 192
Given the JavaScript below:
01 function filterDOM (searchString) {
02 const parsedSearchString = searchString && searchString.toLowerCase() ;
03 document.quesrySelectorAll(' .account' ) . forEach(account => (
04 const accountName = account.innerHTML.toLOwerCase();
05 account. Style.display = accountName.includes(parsedSearchString) ? /*Insert code*/;
06 )};
07 }
Which code should replace the placeholder comment on line 05 to hide accounts that do not match the search string?
  • A. ' Block ' : ' none '
  • B. ' visible ' : ' hidden '
  • C. ' hidden ' : ' visible '
  • D. ' name ' : ' block '
Answer: A

NEW QUESTION # 193
......
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