Why do we need to convert types? What are these types used for?

Question

Why do we need to convert types? What are these types used for? It is not appropriate to demonstrate type conversion here

Answer 1

1. String conversion: Convert other data types into strings, which can be used for operations such as splicing strings and outputting results. 2. Number conversion: Convert other data types into numbers, which can be used for mathematical calculations, size comparisons and other operations. 3. Boolean value conversion: Convert other data types into Boolean values, which can be used for conditional judgments, logical operations and other operations. 4. Object conversion: Convert other data types into objects, which can be used to access the properties and methods of the objects. 5. Array conversion: Convert other data types into arrays, which can be used to traverse and operate data.