} parseFloat(string) Parameters string The value to parse. In this tutorial, we will introduce how to convert a string to integer, float and number in javascript. // Print result Return value. // Return float value Math.ceil(), float.toFixed() and Math.round() Method: All the methods are similar and giving the same output. // Call function The parseFloat () function parses a string and returns a floating point number. Example: To convert French string into float in JavaScript we will first use replace() method to replace every (, ) with (.) } If the string does not contain a numeral value or If the first character of the string is not a Number then it returns NaN i.e, not a number. // Call function // Javascript script to convert the string value to float Value // Print result Please use ide.geeksforgeeks.org, generate link and share the link here. Leading whitespace in this argument is ignored. // Call function Copy link. q = convert_to_float(q); } ALL RIGHTS RESERVED. +typeof q + "
"); For other people looking at this question, it just occurred to me, that to convert a float to a string with at least n decimal places, one could write: function toAtLeastNDecimalPlaces(num, n) { normal_conv = num.toString(); fixed_conv = num.toFixed(n); return (fixed_conv.length > normal_conv.length ? //Driver code acknowledge that you have read and understood our, GATE CS Original Papers and Official Keys, ISRO CS Original Papers and Official Keys, ISRO CS Syllabus for Scientist/Engineer Exam, Floating point number precision in JavaScript. ')); // Return float value q + " Type of " + q + " = " If there is no numeric value in the string, or if the first string character is not a number, then the string returns NaN value, i.e. var q = "-758.44"; function convert_to_float(b) { var q = "45.658"; Conversion of String to Float is generally used if the string including float numbers is to perform mathematical operations. We use the parseFloat method which is an embedded function in JavaScript to accept the string and transform it into a floating dot number. , In this example, you will able see that if we don’t input the value then how output come, .