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Salesforce Certified JavaScript Developer (JS-Dev-101) Sample Questions (Q143-Q148):

NEW QUESTION # 143
Which option is true about the strict mode in imported modules?

A. Add the statement use non-strict, before any other statements in the module to enable not-strict mode.
B. Add the statement use strict =false; before any other statements in the module to enable not- strict mode.
C. You can only reference notStrict() functions from the imported module.
D. Imported modules are in strict mode whether you declare them as such or not.

Answer: D

NEW QUESTION # 144
In the browser, the window object is often used to assign variables that require the broadcast scope in an application Node is application do not have access to the window object by default.
Which two methods are used to address this? Choose 2 answer

A. Assign variables to the global object.
B. Assign variables to module, exports and require them as needed.
C. Use the document instead of the window object.
D. Create a new window object in the root file.

Answer: C,D

NEW QUESTION # 145
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);

Answer: A

NEW QUESTION # 146
Given the code below:
Setcurrent URL ();
console.log('The current URL is: ' +url );
function setCurrentUrl() {
Url = window.location.href:
What happens when the code executes?

A. The url variable has global scope and line 02 executes correctly.
B. The url variable has global scope and line 02 throws an error.
C. The url variable has local scope and line 02 throws an error.
D. The url variable has local scope and line 02 executes correctly.

Answer: A

NEW QUESTION # 147
Refer to the code below:
Let str = 'javascript';
Str[0] = 'J';
Str[4] = 'S';
After changing the string index values, the value of str is 'javascript'. What is the reason for this value:

A. Primitive values are immutable.
B. Non-primitive values are mutable.
C. Primitive values are mutable.
D. Non-primitive values are immutable.

Answer: A

NEW QUESTION # 148
......

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