{"id":465,"date":"2011-03-26T04:32:51","date_gmt":"2011-03-26T10:32:51","guid":{"rendered":"http:\/\/bateru.com\/news\/?p=465"},"modified":"2011-08-30T00:10:50","modified_gmt":"2011-08-30T06:10:50","slug":"code-of-the-day-javascript-random-number-generator","status":"publish","type":"post","link":"https:\/\/bateru.com\/news\/2011\/03\/code-of-the-day-javascript-random-number-generator\/","title":{"rendered":"Code of the Day: Javascript Random Number Generator"},"content":{"rendered":"

Code<\/b>
\n*Updated*<\/b><\/p>\n

\r\n\/\/@function: getRandomNum( i, decLen )\r\n\/**\r\n* @param i, a number for the number range. [0, i)\r\n* @param decLen, the number of fixed decimal length.\r\n* @returns number that is either a float( number with decimals ) or integer (whole number).\r\n* @note if not arguments are passed, then 0 or 1 is returned.\r\n*\/\r\nvar getRandomNum = function( i, decLen ){\r\n\treturn (Math.random() * (i||1) ).toFixed(decLen);\r\n};\r\n<\/pre>\n
Demo<\/b>
\nhttp:\/\/jsbin.com\/uvuze3\/2\/<\/a><\/p>\n
Parameters<\/b>
\nTodays code of the day is a random number generator coded in javascript.
\ngetRandomNum() enhances the Math.random() function that javascript provides by offering you the ability to get a random float ( number with decimals ) or integer( whole number ) value.<\/p>\n
Example output<\/b><\/p>\n
\r\n\/\/get value from Math.random()\r\ngetRandomNum();\t\/\/might return 0\r\n\/\/get value between [0,1) with 5 decimals\r\ngetRandomNum(1,5);\t\/\/might return 0.83034\r\n\/\/get value from [0,99]\r\ngetRandomNum(100);\t\/\/might return 84\r\n<\/pre>\n
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