metric decimal places

For floating point numbers with multiple digits after decimal points, we may only need to retain two digits, but js does not provide such a direct function. Therefore, we have to write the function to implement this function by ourselves. The Code is as follows:Copy codeThe Code is as follows:Function changeTwoDecimal (x ){Var f_x = parseFloat (x );If (isNaN (f_x )){Alert ('function: changeTwoDecimal-> parameter error ');Return false;}Var f_x = Math.

Tags: indicates SQL conversion round oat decimal different need problemProblem:The float Momey type in the database will be accurate to many decimal places. But sometimes we don't need to be that precise, for example, to only be accurate to two significant digits.Solve:1. Use the Round () function, such as the Round (@num, 2) parameter 2, to retain a two-bit vali

There are many methods to retain two decimal places in php, such as sprintf, substr, number_format, and round. I will introduce them to you. There are many methods to retain two decimal places in php, such as sprintf, substr, number_format, and round. I will introduce them to you. Script ec (2); script Method 1 Sprin

Use Math directly. there is a problem with round (x * 100). Sometimes there is a very small error, and many decimal places are displayed. For example, 0.9996*100 will change to 99.96000000000001. What I want is below, if you are interested, refer to Haha Math. round (x * 100)/100, of course I want Math. round (x * 100. But use Math directly. there is a problem with round (x * 100). Sometimes there is a very

Float rounding Keep Two decimal places note the placeRecently in Codewars did a very simple topic, but it took me 20 minutes, although the final solution, but in the middle found that the foundation of Java is not really, go back to a good fixDo not say so much, on the topic: is to write a method, the mileage per gallon conversion into kilometers per liter, keep two digitsAt the beginning of the writing is

In the custom textbox Control, if only numbers are allowed, consider the following three situations:Characters entered by normal buttons, including Spanish and Chinese charactersPress the keyboard shortcut key to paste the text, that is, ctrl + v.Click the mouse operation in the context-related menu to paste the text, that is, the "Paste" operation.Most of the articles of the same type have considered only 1st cases and ignored 2nd and 3 common operations.Only

/*** The value is rounded (Reserved 2 decimal places) after formatting into the amount of the form** @param num Value (number or string)* @return Amount format string, such as ' 1,234,567.45 '* @type String*/function FormatCurrency (num) {num = num.tostring (). Replace (/\$|\,/g, ");if (IsNaN (num))num = "0";Sign = (num = = (num) = Math.Abs (num));num = Math.floor (num*100+0.50000000001);cents = num%100;num

expressed in inches as a floating point value. the revolutions is an integer value. the time is expressed in seconds as a floating point value. input ends when the value of revolutions is 0 (zero ). Output For each data set, print: Trip # N: distance mph Of course n shocould be replaced by the data set number, distance by the total distance in miles (accurate to 2 decimal places) and mph by the speed in m

A percent regular expression that retains up to two decimal places: /^\d+\.? \d{0,2}%$/44.5% 44.66% 0.3% 5% All right 33.444%-5.66% are wrongA percent regular expression that has and retains only two decimal places: /^\d+\.? \d{2}%$/44.66% correct 0.3% 5% 33.444% -5.66% all wrongJs:/^\d+\.? \d{0,2}%$/Java: ^\\d+\\.? \\

1. Round () function The parameter of this function must be of the floating point type. Therefore, the format must be converted first. If it is null, the conversion will fail. When the column is empty, the value 0.00 is displayed. This is not easy to understand. 2. formatnumber () function The format of this function is 123,456,567.00. "," Is added to the data. Not nice. The above two functions are combined with expressions and bound to fields. For example: = Formatnumber (sum (cdbl (Fields

In php, functions such as sprintf, ceil, floor, and round are used to perform rounding. Let's take a look at the specific instance. This article will use php to round the number and retain N decimal places, and use php to round the number. (1) php keeps three decimal places and rounding them The Code is as fo

Python uses the floor function to discard decimal places. This article describes how to discard decimal places through the floor function in python. Share it with you for your reference. The specific analysis is as follows: In python, the floor function of the math library can be used to discard the

1. The stupidest Wayfunction get () { var s = 22.127456 + ""; var str = s.substring (0,s.indexof (".") + 3); alert (str);}2. Regular expression effect is good3. He is more clever ...4.js Reserved 2 decimal places (mandatory)For the number of decimal places greater than 2 bits, with the above function is not a