Javascript examples for Number Operation:Number Format
Custom Number Formatting method
<html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> </head> <body> <script type="text/javascript"> Number.prototype.toNDigits = function (n) { return (Math.abs(this) < 1) ?/* w w w . j av a2s. c o m*/ this.toFixed(n - 1) : this.toPrecision(n); }; console.log( (100).toNDigits(5) ); console.log( (100.45485485).toNDigits(5) ); console.log( (0.00034700).toNDigits(5) ); </script> </body> </html>