When dealing with JavaScript, the difference between "123" and "1-2" can be confusing. While "123" is recognized as a string type with a numerical value, "1-2" is also a string type but it does not allow for multiplication. Why doesn't JavaScript handle this inconsistency?
console.log("1" * "123")//123
console.log(1 * "123")//123
console.log("1" * 123)//123
console.log("ABC" * 123)//NaN
console.log("ABC" * "ABC")//NaN
console.log("0" * "1-2")//NAN
console.log("0" * "1*2")//NAN
console.log("0" * "1+2")//NAN
console.log("0" * "1/2")//NAN
console.log("0" * (1-2))//0EDIT:
-is notsubtractionbut ahyphen. OK. But it should be handle ashyphenwhile concatenation not calculation.
Why does JavaScript struggle with the concept of subtracting or adding "1-1" during compilation? Even though JavaScript converts "123" to an integer when calculating, why can't it handle "1-1" or "1+1" to evaluate to
0or2and convert it to an integer?