Why my code dose not perform addition

Question

var ans =Number(a)+Number(c);
var a, b, c= prompt ("write equation", "", "", "");
if (b=="+") {
alert ("your answer is "+ans);
}else {
alert("i am not program for this ");
}

Answer 1

You cannot have more then one input field in a prompt ,you have to use them seperately!

And before declaring a, b ,c, you can't use them ,it will be undefined.

https://code.sololearn.com/WkXnh1w0al0L/?ref=app

Answer 2

Yup,you can use jQuery to achieve it.

Check this it will help you!
https://stackoverflow.com/questions/12909044/is-it-possible-to-give-multiple-input-box-in-prompt-alert-in-javascript

Answer 3

Yes , i try it also ....but when i want to input all the equation in one line what's function can i use ?