Web Reference: This video is an introduction to JavaScript Variables. Part 3 of 5. Part of a series of video tutorials to learn JavaScript for beginners!...more Numbers are not allowed as the first character in names. This way JavaScript can easily distinguish identifiers from numbers. May 29, 2024 · Variables are containers for storing values. All JavaScript variables must be identified with unique names. These unique names are called identifiers. Identifiers can be short names (like x and y) or more descriptive names (age, sum, totalVolume). The general rules for constructing names for variables (unique identifiers) are:
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