using mozilla console
Please read the image. does it look like I am using the console window correctly? I am trying to interactively code. So, started with a very basic basic code. When I run it, i get an error. There must must be something wrong.
Please read the image. does it look like I am using the console window correctly? I am trying to interactively code. So, started with a very basic basic code. When I run it, i get an error. There must must be something wrong.
所有回覆 (1)
If you use let and not var, then you can only define this variable once. So if you run the code a second time, then Firefox complains that you redefine the variable. You would either leave out the line with let a,b,c; or enclose the code in a {} block to make it local variables.
{
let a,b,c;
a=1;b=2;c=a+b;
console.info("a+b=",c);
}