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JavaScript JavaScript Basics (Retired) Storing and Tracking Information with Variables Introducing Variables

Posted by fd dd
fd dd
481 Points

Sir, Did you say a wrong? You said value of 1st variable "Hello" will be gone but it exist.

Sir, Did you say a wrong? You said value of 1st variable "Hello" will be gone but it exist. It will be gone when you assign a new 2nd value with same var before commanding to print

3 Answers

Shashikant Chaudhary
Shashikant Chaudhary
5,365 Points
Shashikant Chaudhary
Shashikant Chaudhary
5,365 Points

Yes you're right ,but at the end the value which the variable message stores is the 2nd value i.e. "Welcome to Javascript Basics". So if you use the variable message in the later part of the code it will be having the 2nd value.

Hope it helps

Haroon Ahmed
Haroon Ahmed
5,173 Points
Haroon Ahmed
Haroon Ahmed
5,173 Points

Whenever you update the value of a variable the previous value is overwritten and the variable has the new value which you have updated.

nirmalabasdeo
.a{fill-rule:evenodd;}techdegree
nirmalabasdeo
Python Development Techdegree Student 3,787 Points

Hi Fd,

That is correct,when you update the value of the variable , the previous value is overwritten. In the exercise, both of the values were displayed because after each value, the function alert was called. If you removed the first alert function, you will see it displays only the second value of the message.

Nirmala

Jennifer Mitchell
seal-mask
.a{fill-rule:evenodd;}techdegree
Jennifer Mitchell
Full Stack JavaScript Techdegree Student 3,917 Points
Jennifer Mitchell
.a{fill-rule:evenodd;}techdegree
Jennifer Mitchell
Full Stack JavaScript Techdegree Student 3,917 Points

The program still executes from top to bottom. At the beginning of the program, the variable contains the string "Hello!" so that is what appears in the first alert box. As the program continues to execute and the variable is changed, you will see the new value in a new alert box.