What does lastIndexOf mean in Javascript?

What does lastIndexOf do in JavaScript?

The lastIndexOf() method returns the position of the last occurrence of a specified value in a string. lastIndexOf() searches the string from the end to the beginning, but returns the index s from the beginning, starting at position 0.

What is the difference between indexOf and lastIndexOf in JavaScript?

indexOf() method returns the position of the first occurrence of a specified value in a string. string. lastIndexOf() method returns the position of the last occurrence of a specified value in a string.

How does lastIndexOf work in Java?

lastIndexOf(String str) : This method accepts a String as an argument, if the string argument occurs one or more times as a substring within this object, then it returns the index of the first character of the last such substring is returned. If it does not occur as a substring, -1 is returned.

What is the use of indexOf in JavaScript?

The indexOf() method returns the index within the calling String object of the first occurrence of the specified value, starting the search at fromIndex .

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What happens when you divide by zero in JavaScript?

In JavaScript, division by zero yields Infinity . Similarly, division by negative zero yields -Infinity . Therefore, to determine if a number is equal to -0, we must check that it is a zero, then perform division with it as the denominator, and check for -Infinity as shown below.

How does a for loop start?

The loop initialization where we initialize our counter to a starting value. The initialization statement is executed before the loop begins. If the condition is true, then the code given inside the loop will be executed, otherwise the control will come out of the loop. …

How do I use lastIndexOf?

The lastIndexOf() method returns the position of the last occurrence of a specified value in a string. lastIndexOf() searches the string from the end to the beginning, but returns the index s from the beginning, starting at position 0. lastIndexOf() returns -1 if the value is not found. lastIndexOf() is case sensitive.

What is indexOf in Java?

The Java indexOf() method finds the index position at which a specified string begins. This method lets you find a string within another string. … indexOf() returns the index of a particular character or substring in a string.

How do I find the last path of a URL?

We identify the index of the last / in the path, calling lastIndexOf(‘/’) on the thePath string. Then we pass that to the substring() method we call on the same thePath string. This will return a new string that starts from the position of the last / , + 1 (otherwise we’d also get the / back).

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What is replace method in Java?

The Java string replace() method will replace a character or substring with another character or string. … The Java replace() method is used to replace all occurrences of a particular character or substring in a string with another character or substring.

How do you read the last string in Java?

If we want to get the last character of the String in Java, we can perform the following operation by calling the “String. chatAt(length-1)” method of the String class. For example, if we have a string as str=”CsharpCorner”, then we will get the last character of the string by “str. charAt(11)”.

How do I reverse a string?

Different ways to find the reverse of a string in the C

  1. Reverse a string using the strrev() function.
  2. Reverse a string without using the library function.
  3. Reverse a string using the recursion function.
  4. Reverse a string using for loop.
  5. Reverse a string using while loop.
  6. Reverse a string using pointers.