String() TheString()method creates a primitive String type for the number that is passed to it: leta =30;String(a);// '30'String(24);// '24'String(35.64);// '35.64' The main difference here is that theStringobject does not do any base conversions likeNumber.toString()does. ...
Don’t forget the second parameter, which is the radix, always 10 for decimal numbers, or the conversion might try to guess the radix and give unexpected results.parseInt() tries to get a number from a string that does not only contain a number:...
So the battle really comes down totoString()andString()when you want to convert a value to astring. This one does a pretty good job. Except it will throw an error forundefinedandnull. So definitely be mindful of this #String() String(string);// 'hello'String(number);// '123'String(...
Number("25")// returns 25 (typeof === number) We pass a string value of"25"to theNumber()constructor and it returns a new number value of25. If you checked thetypeofvalue for the new value, you'd find that it was transformed successfully from a string to a number. Here are some...
Let's look at 6 different methods to convert a string into a number.parseInt() methodThe parseInt() method converts a string into a whole number (an integer). It takes two arguments. The first argument is the string to convert. The second optional argument is the base number called radix...
//Example JavaScript string that contains a number var str = '12'; //Convert our string into an int by //using the parseInt function. var num = parseInt(str); //Log it to the console console.log(num); In the snippet above, we used the nativeparseIntfunction to parse our string and...
The implicit coercion is when you apply various operators (+, -, ' ', /, and more) to the values of different types, and explicit coercion is when you use a function such as String(), Number(), etc. The example for both the type coercion is as shown below. var str_1 = ['This...
Convert a string into an integer (a whole number). The second argument,10, is called theradix. This is the base number used in mathematical systems. For our use, it should always be10. // returns 42parseInt('42',10);// also returns 42parseInt('42px',10); ...
Unlike the parseInt() method, Number.toFixed() is not that famous for extracting the integer part, as it does a round-up of the float value passed as a parameter. One can use this function to convert only float values. Unlike the parseInt() function, string value conversion to float is...
If the comma-separated string has a known number of spaces in a repeating sequence (e.g. ", "), then you can simply specify it as the delimiter to the String.prototype.split() method, for example, like so: const str = 'foo, bar, baz, qux'; console.log(str.split(', ')); /...