javascript round to 2 decimal

Cyclic decimal fraction ① pure cyclic decimal fraction, the numerator is the number of digits in a circular section, the number of the denominator is 9, and the number of 9 is equal to the number of The number of the cycle section, which can be an approximate score. Example 1: Convert 0.7 into a score. 0.7 × 10 = 7.777 ...... ① 0.7 = 0.777 ...... ② 0.7 × 9 = 7 from ①-② so 0.7 = 7/9 Example

= =) Alert (/^-?\d+\.\d+$/.test (This.value));"/>Real numbers:"text"Size=" -"onkeydown="if (Event.keycode = =) Alert (/^-?\d+ (\.\d+) $/.test (This.value));"/>Keep 1 decimal places:"text"Size=" -"onkeydown="if (Event.keycode = =) Alert (/^-?\d+ (\.\d{1,1})? $/.test (This.value));"/>Keep 2 decimal places:"text"Size=" -"onkeydown="if (Event.keycode = =) Alert (/^-

At the invitation of a netizen, I wrote a numeric conversion function. If you have any shortcomings, click it. # Include /* * Function: int convert (INT num, char * STR, unsigned int Radix)* Function: convert a decimal integer to 2 ~ 36 (excluding 10) hexadecimal number* Parameter: num decimal integer* String buffer after STR conversion. Suppose the buffer i

In C + + programming, sometimes ask us to keep the data after the decimal point, or how many digits to retain the number of valid numbers and so on, then we need to use the setiosflags and setprecision functions, remember to include the header file #include #include #include//need thisusing namespacestd;intMain () {floatA =4, B =3, C =2; coutEndl; coutEndl; cout3) Endl; cout3) Endl; coutfixed) 3) Endl; cout

Package com.swift;Import Java.util.Scanner;public class Purchasetaxdecimalstwo {public static void Main (string[] args) {Scanner scan=new Scanner (system.in);//Scan Workbench InputDouble purchaseamount=scan.nextdouble ();//Enter a value to assign the purchase amount variableSystem.out.println (Purchaseamount);Double taxrate=0.06;//tax RateDouble tax;tax=purchaseamount*taxrate;//Tax Multiple decimal placesSYSTEM.OUT.PRINTLN (tax);SYSTEM.OUT.PRINTLN ((i

How does one convert a string to decimal by using JavaScript in hexadecimal conversion? JS is a magical language. Many internal functions can help us convert data (in; Javascript can be directly in hexadecimal notation; Var a = 0xff; // 255. Convert any hexadecimal string to decimal, such as binary, octal, and hexadeci

Tags: blog an insurance LAN Sdn. NET nbsp SQL selThe 1.round () function is rounded with, the first parameter is the data we want to manipulate, the second parameter is set after we rounded the decimal point after a few shows.The 2 parameters of the 2.numeric function, the first representing the length of the data, and the second parameter represents the number o

Have a tried this?CGFloat val = 37.777779;CGFloat Rounded_down = Floorf (val * 100)/100; /* result:37.77 */CGFloat nearest = Floorf (val * 100 + 0.5)/100; /* result:37.78 */CGFloat rounded_up = Ceilf (val * 100)/100; /* result:37.78 */Source:rounding number to 2 Decimal Places in CComplementing:you just don ' t have control on how the computer would store the float value.So these rounded values is exactly t

How to retain 2 decimal places in C + +. Cout The above code requires a header file #include . The Setprecision function refers to the precision of setting the output, for example: float a=2017.666;Cout 2017.7** will be output (note: This will be rounded) * * If the parameter in the setprecision is less than the integer digits, it will be exported exponentially, for example: float a=123.666;Cout

#include #include #include #include using namespace Std;int main (){Char Ch[8];Char ch2[8]={' 0 ', ' 0 ', ' 0 ', ' 0 ', ' 0 ', ' 0 ', ' 0 ', ' 0 '};Ltoa ("0xba", "strtol", +), ch,2);Coutfor (int i=8-strlen (CH), j=0;i{CH2[I]=CH[J];}if (ch2[0]== ' 1 '){coutcout"0xba") }else{coutCout"0xba",' + ') }return 0;}^ (*￣ (oo) ￣) ^: Red number portion for const char* type;The main application functions are: Strtol;ltoaThe first function is to convert the string

JS reserved Two-bit decimal example rounding using function toFixed () PHP reserved Two-bit decimal example rounding /** 1.number_format */ $number = 1234.5678; $nombre _format_francais = Number_format ($number, 2, ', ', '); 1234,57 $english _format_number = Number_format ($number, 2, '. ', ')

The first, using Math.Round The code is as follows Copy Code var original=28.4531)//round "original" to two decimalsvar result=math.round (original*100)/100; Returns 28.452)//Round "original" to 1 decimalvar result=math.round (original*10)/10; Returns 28.5 The second, js1.5 above can be used tofixed (x), you can specify the number of intercepted decimal point x The code is as follows Copy Code

formatted.* Parameter: type, used to determine whether the formatted amount requires decimal places.* Return: returns the formatted numeric string.*/Function formatMoney (s, type ){If (/[^ 0-9 \.]/. test (s ))Return "0 ";If (s = null | s = "")Return "0 ";S = s. toString (). replace (/^ (\ d *) $/, "$1 .");S = (s + "00"). replace (/(\ d * \. \ d) \ d */, "$1 ");S = s. replace (".",",");Var re =/(\ d) (\ d {3 },)/;While (re. test (s ))S = s. replace (r

Convert the java decimal number (negative number supported) to the n-base (n is between [2, 36) Public class DecimalTONBigit {/*** decimal number (which can be a negative number) to n (n is between [2, 36) hexadecimal * @ author wl */public static final int N = 36; // N indicates hexadecimal public static void main (S

requirements, the number is formatted, the results are still numbers.Analysis: This requirement is a very common and normal requirement, and since Oracle is so powerful, it should provide relevant methods,So, to find the relevant documentation for Oracle, finally, find a cast function, which is responsible for the type conversion, try it.The results show that the method is feasible. Test the SQL statement as follows:[SQL] Select CAST (1234.4 as number (

numbers.Analysis: This requirement is a very common and normal requirement, and since Oracle is so powerful, it should provide relevant methods,So, to find the relevant documentation for Oracle, finally, find a cast function, which is responsible for the type conversion, try it.The results show that the method is feasible. Test the SQL statement as follows:[SQL]View PlainCopy Select CAST (1234.4 as number (2)) as AA from dual; Sele

printf is a formatted output function that can print directly decimal, octal, hexadecimal, output control characters%d,%o,%x, but it does not exist binary, if output binary, can be handwritten, But you can also call the Itoa function inside Stdlib.h, which is not a function in the standard library, but most compilers have this function, so let's introduceThe prototype of the ITOA function is char* itoa (int value, char * string, int radix); int value

private void Cells_keypress (object sender, KeyPressEventArgs e)//custom Event{if (this.datagridview1.currentcelladdress.x = 2){string AA = @ "^\d+$";string bb = @ "^\. {0,1}$ ";Regex reg1 = new regex (AA);Regex reg2 = new Regex (BB);if (!REG1. IsMatch (E.keychar.tostring ()) !REG2. IsMatch (E.keychar.tostring ()) e.handled = true;string cc = @ "^\d+ (\.{ 0,1}\d{0,1}) $ ";//@" ^ (-?\d+) (\.\d+) $ ";Char[] point={'. '};String[] Seperated=celledit.text.

Some small algorithms are of the Java version, and a large number of questions on the network are aimed at C ++. Therefore, Java implementation is rare, but they are the basis of the test, The implementation is the same. You can broaden your thinking and be helpful. /*** 1 hop steps* Question: there are N levels in a step. If you can skip 1 level at a time, you can also skip 2 levels.* Calculate the total number of hops in total and analyze the time

) + newstr;//character story pick up } count++; str = newstr + (str + "+"). substr ((str + ")" IndexOf ("."), 3); Console.log (str) } } formatnum (' 13213.24 ');//Output 13,213.34 formatnum (' 132134.2 ');//Output 132, 134.20 formatnum (' 132134 ');//Output 132,134.00 formatnum (' 132134.236 ');//Output 132,134.236 2. Use regular (relatively insufficient is still have to judge the number of digits after the