Variables hold the data value which could be number, string or object type.
basically it create space in memory. Typescript variable follow same JavaScript naming rules.
Example Code:
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// number let age: number = 32; // string let fullName: string = "Shrikant Kumar"; // boolean let isMarried: boolean = true; // any let randomValue: any = "This is a string"; randomValue = 42; // This is now a number // void function logMessage(message: string): void { console.log(message); } // null and undefined let nullValue: null = null; let undefinedValue: undefined = undefined; logMessage(" my name " + fullName + " my age: " + age + " Marital status: " + isMarried + " and random value is: " + randomValue ) |
Output:
 my name Shrikant Kumar my age: 32 Marital status: true and random value is:  42