Congratulations. You've aced all the exercises for this chapter.
To practice on your own, or to check code you believe shouldn't have been scored as incorrect, go to CodePen.
1
2
3
4
5
6
7
8
9
10
Exercise 1
You can think of it as a unique, random big number stored in the computer's memory. It's a ______.Press ctrl-Enter or click button to check answer.
To practice on your own, or to check code you believe shouldn't have been scored as incorrect, go to CodePen.
0,1,2,3,4,5,6,7,8,9
0
0
0
0
| You can think of it as a unique, random big number stored in the computer's memory. It's a ______. | symbol | symbol | |
| Fill in the blank to assign a symbol to something. | const something = ___________; | Symbol() | Symbol\(\) |
| Fill in the blank. | const password = Symbol(); const user307 = { email: "bramstoker@gmail.com", [________]: "xTwp&sp_" }; |
password | password |
| Fill in the blank. | const password = Symbol(); const user307 = { email: "bramstoker@gmail.com", ________: "xTwp&sp_" }; |
[password] | \[password\] |
| Assign a symbol to a "constant variable." Make up the name of the variable. | const patientNumber = Symbol(); | const[a-z_$][a-zA-Z0-9_$]*=Symbol\(\); | |
| Fill in the blank. | const password = Symbol(); const user307 = { email: "bramstoker@gmail.com", [password]: "xTwp&sp_" }; const nationality = Symbol(); user307___________ = "Irish"; |
[nationality] | \[nationality\] |
| Given the following code, call the method. | const password = Symbol(); const user307 = { email: "bramstoker@gmail.com", [password]: "xTwp&sp_" }; const showPassword = Symbol(); user307[showPassword] = function() { console.log(this[password]); } |
user307[showPassword](); | user307\[showPassword\]\(\); |
| A symbol has been assigned to the "constant variable" showPassword. Rewrite this line to correct the error. | user307.showPassword = function() { | user307[showPassword] = function() { | user307\[showPassword\]=function\(\){ |
|
|||
|
