Why Does Using a Single Dot Fail to Access Integer Properties in JavaScript?

Why Can't Single Dot Notation Access Integer Properties?

When attempting to invoke a property of an integer using a single dot, such as:

3.toFixed(5)

you may encounter a syntax error. This is because the period (.) is inherently part of the number, leading to the interpretation of the code as follows:

(3.)toFixed(5)

This results in a syntax error since you cannot follow a number immediately with an identifier.

To rectify this issue, methods must be employed to separate the period from the number. One such approach is to enclose the number in parentheses:

(3).toFixed(5)

This effectively prevents the period from being interpreted as part of the number, allowing access to the toFixed property.

While various alternatives exist, utilizing parentheses is arguably the most straightforward approach. Other methods include:

• Double dots: 3..toFixed(5)
• Adding a space: 3 .toFixed(5)
• Using bracket notation: 3["toFixed"](5)

Select the method that best suits your preference and coding style.

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