How to use eval functions in excel

1. Use the Eval function in the JavaScript footfall language: create a new webpage file named "a.a.html", enter the code shown in the figure in the file and save it. Open the webpage file to run the script, and enter the result as shown in the figure.

 
2. Use the Eval function in ExcelVBA programming: Enter the ExcelVBA programming environment, create a module, enter the content as shown in the figure in the module, and click Run. The result is as shown in the figure.

 
3. Use of Eval functions in VBScript language: in VB Script language, Eval functions have two meanings. One is to calculate the expressed value, that is, eval () A function can convert a string to code execution and return one or more values. The second is to run the specified code. The instance is shown in the following figure.

 
4. Use of the Eval function in PHP code: the eval () function calculates the string according to the PHP code. The string must be a valid PHP code and must end with a semicolon. If the return statement is not called in the code string, NULL is returned. If a parsing error exists in the code, the eval () function returns false. The instance is shown in the following figure.