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numbers. If we have a variable with the value
'5', that is a string, but if our value is
5, then we have a number. Note that the string values have to be put in quotes.
Let’s say that we want to add two integers together, for example,
2. Here is what we should expect to see.
But if our values are a string, we will get a different output.
methods. And one of those methods is called
Number(). Next, let’s learn how to use it.
Number()Method for converting a string to an integer
Number()method lets us convert the string into a number. It is a pretty handy method, but it doesn’t convert our string into an integer. So if we convert a number that isn’t whole, we will see all of the other numbers after the decimal point.
In order to use this method you just have to add the variable or type in a string into the parentheses of the method.
As we can see, the output isn’t an integer. What we can do is add another function to this function, which will turn our number into an integer. Well there are actually 2 methods that we can add, and the first one is:
This method takes in a number and returns the largest integer, which is less than or equal to a given number. Here is how you can use this method:
This method does the opposite of
Math.floor(). It always rounds a number to the next highest integer.
This method returns a number rounded to the nearest integer.
I know this may seem a bit confusing and difficult at first, but these are super useful methods that everyone should know.
parseInt()method will convert our string into an integer. It works almost the same as the
Number()method, but our output will be a whole number. Here is an example:
As you can notice, no matter what digit you put in, the output will always be the number with all of the digits after the decimal point.
It may seem that the
I would recommend that you play around with these methods to get the hang of them.
Hope that this helps! Regards, Bobby