What value does the eval function return when executing '10*10+5'?

The eval function in JavaScript takes a string expression and evaluates it as if it were a standard line of JavaScript code. When you pass the string '10*10+5' to the eval function, it interprets this expression and computes the result.

In this case, the operation consists of two parts: the multiplication (10 * 10) which equals 100, and then the addition (100 + 5) which yields 105. Therefore, the eval function will return the numeric value of this computation, which is 105.

Understanding the output of the eval function is crucial, as it returns the result of the evaluated expression as a number rather than a string or an error. This differentiates it from options that suggest it would return a string or an error type.