parseInt() is a method that can convert a string into an integer.
parseInt() can be useful if you have a number formatted as a string but you need to perform a calculation with it.
parseInt() function comes in.
ParseInt() is a built-in method that can be used to convert a string into an integer. This can be useful in a number of cases, especially those where you have a number formatted as a string but where you need to perform a calculation on that number.
parseInt() method. We’ll discuss the syntax used with the
It’s important that you use the right data type when you are programming because each data type interacts slightly differently with code. For example, you can perform a number of mathematical operations on numbers, but those same functions usually do not work with a string. Thus, converting a string to an integer or doing any other type conversion is common in programming.
var example_string = "Hello, this is an example string!"
var example_number = 5;
parseInt() can be used to convert a string or a floating-point number to an integer.
parseInt() method takes two parameters. The first one is the string you want to convert to an integer and is required. The second parameter, called the
“radix,” is optional and describes the base of the string you are using for your conversion.
Let’s use an example to illustrate how this works. Let’s say that we have a string “20202” that we want to convert to an integer. We could do so using the following code:
Our program parses a string and returns an integer as follows:
As you can see, our program has returned a number instead of a string.
Similarly, if we use the
“radix” argument, we can convert our numbers to strings in different bases. The
“radix” argument takes in a number between 2 and 36 and describes the numerical system the
parseInt() function should use. So, if we want to convert a
“15” from hexadecimal that has a radix value of
“16,” we could do so using the following code:
Our function returns:
“NaN,” which stands for Not a Number. Here’s an example of using
parseInt() to convert
“Hey” into a string:
Our number parseInt returns
“NaN,” because the
“Hey” string characters cannot be converted into a number.
parseInt() method can be used to convert a string to an integer. This function is useful if you have a string of data that needs to be formatted as a number in order for you to run a particular function. For example, you may want a string to be a number so you can perform mathematical operations on that string.
parseInt() method and discussed a few examples of the method in action. We also analyzed how the
“radix” parameter can be used with
parseInt() method like a pro!