Convert string to integer. How to set input type date in dd-mm-yyyy format using HTML ? How to read a local text file using JavaScript? This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in the cookie policy. 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. Convert boolean result into number/integer in JavaScript. You may also have a look at the following articles to learn more –, JavaScript Training Program (39 Courses, 23 Projects). // Using parseFloat() method and using replace() method  to replace ', ' with '.' // Javascript script to convert the string to float value How to convert a float number to the whole number in JavaScript? +typeof q + "
"); // Call function var q = "abc, mno"; q + "
Type of " + q + " = " This method always returns an integer..parseFloat() takes a String as an argument, and returns the Float point number equivalent. . . See the discussion of rounding in the description of the Number.prototype.toFixed() method, which also applies to toPrecision(). // Print result var floatValue = +(b); var q = "-758.44"; // Return float value q = convert_to_float(q); document.write("Converted value = " + See your article appearing on the GeeksforGeeks main page and help other Geeks. It returns the nearest integer rounded down. return floatValue; Example: To convert French string into float in JavaScript we will first use replace() method to replace every (, ) with (.) +typeof q + "
"); There are 2 methods to convert string to float which are as follows, Start Your Free Software Development Course, Web development, programming languages, Software testing & others, So now we will see these two methods one by one. A string representing a Number object in fixed-point or exponential notation rounded to precision significant digits. // Javascript script to convert the string to float value then follow any of above described method. return floatValue; , This is a guide to JavaScript String to Float. 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 ? // Call function Check if an array is empty or not in JavaScript. // Call function Example: Below program demonstrates the above approach, edit Remember, that only the first number in the string will be returned. // Function to convert  the string to float value var q = "abc.658"; How to convert a plain object into ES6 Map using JavaScript ? //Driver code // Call function document.write("Converted value = " + document.write("Converted value = " + var q = "-336, 11"; The first argument of parseInt must be a string.parseInt will return an integer found in the beginning of the string. Syntax numObj.toPrecision([precision]) Parameters precision Optional An integer specifying the number of significant digits. q + "
Type of " + q + " = " 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. // Print result // Print result //Driver code q = convert_to_float(q); How to Align modal content box to center of any screen? Ask Question Asked 4 years ago. // Javascript script to convert the string to float value Return value. Math.floor() is used to round an integer or floating point number. // Call function +typeof q + "
"); // Call function // Type conversion of string to float ,