Window of the input value is not the same as the results of 2 and 4 why?
Please everyone a great god,

CodePudding user response:

Because the prompt () is the content of the input string,
Two strings with the + operation is the joining together of the string,
Such as "2" + "3" is equal to "23"

You need to use parseInt () or parseFloat () converts a string into value, and then to numerical computation,
Such as
X=parseFloat (prompt (" please input the value of x "));

CodePudding user response:

Thank you bosses took a long time didn't understand understand now