Question

In Javascript Write a JavaString function called string_part this function should take three parameters. The first parameter should be string, the second and third parameters should be integers. the function should return a substring that starts at the index equal to the second parameter (inclusive) and ends at the index equal to the third parameter (also inclusive). If the third parameters happen to be smaller than the first parameter the function should return an empty string. If the third parameter is larger than the last valid string index the function should return a substring that starts at the index equal to second parameter and go to the end of the string. If the second parameter happen to be negative, the function should return a substring that starts at index 0.

Answer 1

In JavaScript, you can write a function called string_part that takes a string and two integers as parameters. The function should return a substring that starts at the index specified by the second parameter (inclusive) and ends at the index specified by the third parameter (inclusive).

Step-by-step explanation:

The subject of this question is JavaScript programming. In JavaScript, you can write a function called string_part that takes a string and two integers as parameters. The function should return a substring that starts at the index specified by the second parameter (inclusive) and ends at the index specified by the third parameter (inclusive).

Here is an example implementation of the string_part function:

function string_part(string, start, end) {
if(end < start)
return "";
if(end >= string.length)
return string.substring(start);

return string.substring(start, end + 1);
}

If the third parameter is smaller than the second parameter, the function will return an empty string. If the third parameter is larger than the last valid index of the string, the function will return a substring starting from the second parameter to the end of the string. If the second parameter is negative, the function will return a substring starting from index 0.