The front end needs to limit the input value to a maximum value, and needs to consider the type of input data, the purpose of the input data, and the source of the input data.

1. Type of input data: If the input data type is a number or other comparable type, then it is necessary to consider limiting a maximum value to avoid calculation errors or overflows caused by excessive input data. .

2. Purpose of input data: If the purpose of input data is to use it as a parameter for a certain calculation or a benchmark value for comparison, then you need to consider limiting a maximum value to avoid affecting the calculation results or comparison results. Make an impact.

3. Source of input data: If the input data is input by the user, then you need to consider limiting a maximum value to avoid user input errors that may cause the program to crash or produce abnormal results.