What is the proper way to define a constant? 大 var Const = 10 %3D O var CONSTANT; var CONSTANT = 10; var const = 1%3;

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what is the proper way to define a constant in JavaScript
### How to Define a Constant

**Question:**
What is the proper way to define a constant?

**Options:**
1. ⬜ var Const = 10
2. ⬜ var CONSTANT;
3. ⬜ var CONSTANT = 10;
4. ⬜ var const = 10;

In the provided multiple-choice question, learners are asked to identify the correct method to define a constant in a programming context. Constants are variables whose values do not change once set. In many programming languages, constants are conventionally defined using specific keywords and naming conventions which often include uppercase letters for the name.

- **Option 1: `var Const = 10`** 
  This option uses the keyword `var` which is typically used to declare standard variables, not constants. Additionally, the name `Const` is not entirely in uppercase, which is the convention for constants.

- **Option 2: `var CONSTANT;`**
  This option declares a variable using the keyword `var` but does not assign a value to it. Additionally, constants should be initialized at the point of declaration.

- **Option 3: `var CONSTANT = 10;`**
  This option uses the correct naming convention with uppercase letters but uses the keyword `var` which is not used for constants. Generally, a specific keyword like `const` is used instead of `var`.

- **Option 4: `var const = 10;`**
  This option, similar to the others, incorrectly uses the `var` keyword and does not follow the uppercase naming convention.

### Conclusion
None of the provided options correctly define a constant. The proper way to define a constant typically involves the use of the keyword `const` or similar, depending on the programming language, and the name should be in uppercase letters. For example, in JavaScript, it would be:
```javascript
const CONSTANT = 10;
```
Transcribed Image Text:### How to Define a Constant **Question:** What is the proper way to define a constant? **Options:** 1. ⬜ var Const = 10 2. ⬜ var CONSTANT; 3. ⬜ var CONSTANT = 10; 4. ⬜ var const = 10; In the provided multiple-choice question, learners are asked to identify the correct method to define a constant in a programming context. Constants are variables whose values do not change once set. In many programming languages, constants are conventionally defined using specific keywords and naming conventions which often include uppercase letters for the name. - **Option 1: `var Const = 10`** This option uses the keyword `var` which is typically used to declare standard variables, not constants. Additionally, the name `Const` is not entirely in uppercase, which is the convention for constants. - **Option 2: `var CONSTANT;`** This option declares a variable using the keyword `var` but does not assign a value to it. Additionally, constants should be initialized at the point of declaration. - **Option 3: `var CONSTANT = 10;`** This option uses the correct naming convention with uppercase letters but uses the keyword `var` which is not used for constants. Generally, a specific keyword like `const` is used instead of `var`. - **Option 4: `var const = 10;`** This option, similar to the others, incorrectly uses the `var` keyword and does not follow the uppercase naming convention. ### Conclusion None of the provided options correctly define a constant. The proper way to define a constant typically involves the use of the keyword `const` or similar, depending on the programming language, and the name should be in uppercase letters. For example, in JavaScript, it would be: ```javascript const CONSTANT = 10; ```
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