![]() For floating-point values, we cannot use them as they will convert those into an integer. However, there is a pitfall when using the Math methods for conversion. For example, console.log(Math.ceil("123")) But few methods of this in-built object are used to convert the string to an integer. Math is a built-in object in JavaScript which has methods for complex mathematical operations. Use the Math Object to Convert a String to Integer in JavaScript Similarly, we can use parseFloat() to convert a string to a floating-point number. For more information, check out the docs. ParseInt() also can convert hexadecimal values and values with the different base number systems, like the binary system, the octal system, etc. Hence, while using parseInt() be aware of the fact. ParseInt("100.50") returns 100 instead of 100.50, as it converts the input number to an integer. In most cases, we don’t need to specify the radix as the default is 10. Most numbers that we deal with in our day-to-day life are usually in the base of 10, which signifies a decimal value. parseInt() takes two arguments, one is the string that needs to be converted, and the other one is the radix (means the base). Use the parseInt() Function to Convert a String to Integer in JavaScriptĪnother way of dealing with string numbers is using the parseInt() method of JavaScript. It returns NaN if the input parameter is either undefined or not convertible to a number. The Number() is a function of the Number construct which can be used to convert other data types to a number format (as per the MDN Docs). Math.round("123") Use the Number() Function to Convert a String to a Number in JavaScript.As strings are operated upon differently, it may be necessary to convert these strings to a number format to perform arithmetic operations on them with ease. For example, the data fetched from an API or a database query in a string format to a number. We must have had various scenarios to convert a number. Use the Math Object to Convert a String to Integer in JavaScript.Use the parseInt() Function to Convert a String to Integer in JavaScript.Use the Number() Function to Convert a String to a Number in JavaScript.JavaScript JavaScript String JavaScript IntegerĬreated: March-21, 2021 | Updated: October-02, 2021
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