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NOVOTS KMS .: ¹¤×÷Ðĵà .: JavaScript ËÄÔòÔËËã(¼Ó¼õ³Ë³ýСÊýÔËËã)±ÜÃâËðʧ¾«¶È

JavaScript ËÄÔòÔËËã(¼Ó¼õ³Ë³ýСÊýÔËËã)±ÜÃâËðʧ¾«¶È

ÔÚjavascriptÖУ¬µ±ÄãʹÓÃСÊý½øÐмӼõ³Ë³ýÔËËãʱ£¬Äã»á·¢ÏÖ£¬ËùµÃµ½µÄ½á¹ûÓÐʱºóÃæ´øÓг¤³¤µÄÒ»¶ÎСÊý£¬Ê¹ÔËËã±äµÃ¸´ÔÓ£¬²¢ÇÒÓ°Ïì¼ÆËã½á¹û¡£ÉÏÍø²éѯÁËÒ»ÏÂÔ­Òò£¬´óÖÂÈçÏ£ºÔÚjavascriptÖУ¬´øÐ¡ÊýµÄÊý¾ÝÔËËãʱ×Ü»á³öÏֺöàλСÊý.ÕâÊÇÒòΪÔÚjavascriptÖи¡µãÊýµÄ¼ÆËãÊÇÒÔ2½øÖƼÆËãµÄ¡£ÓÚÊÇÔÚÍøÉÏÕÒÁËһϽâ¾ö·½·¨£¬ÔÚ´Ë×öÒ»ÏÂ×ܽᣬÒÔ±ãÒÔºóʹÓã¬Í¬Ê±£¬Ï£Íû¶ÔÓÐÐèÒªµÄÅóÓÑÓÐËù°ïÖú¡£ ½â¾ö·½·¨Ë¼Â·£º½«Ð¡Êý»¯³ÉÕûÊýºóÔÙ×÷ÔËËã¡£¾ßÌå´úÂëÈçÏ£º /** * ¼Ó·¨ÔËË㣬±ÜÃâÊý¾ÝÏà¼ÓСÊýµãºó²úÉú¶àλÊýºÍ¼ÆË㾫¶ÈËðʧ¡£ * @param num1¼ÓÊý1 | num2¼ÓÊý2 function numAdd(num1, num2) { var baseNum, baseNum1, baseNum2; try { baseNum1 = num1.toString().split(".")[1].length; } catch (e) { baseNum1 = 0; } try { baseNum2 = num2.toString().split(".")[1].length; } catch (e) { baseNum2 = 0; } baseNum = Math.pow(10, Math.max(baseNum1, baseNum2)); return (num1 * baseNum + num2 * baseNum) / baseNum; }; /** * ¼Ó·¨ÔËË㣬±ÜÃâÊý¾ÝÏà¼õСÊýµãºó²úÉú¶àλÊýºÍ¼ÆË㾫¶ÈËðʧ¡£ * @param num1±»¼õÊý | num2¼õÊý */ function numSub(num1, num2) { var baseNum, baseNum1, baseNum2; var precision;// ¾«¶È try { baseNum1 = num1.toString().split(".")[1].length; } catch (e) { baseNum1 = 0; } try { baseNum2 = num2.toString().split(".")[1].length; } catch (e) { baseNum2 = 0; } baseNum = Math.pow(10, Math.max(baseNum1, baseNum2)); precision = (baseNum1 >= baseNum2) ? baseNum1 : baseNum2; return ((num1 * baseNum - num2 * baseNum) / baseNum).toFixed(precision); }; /** * ³Ë·¨ÔËË㣬±ÜÃâÊý¾ÝÏà³ËСÊýµãºó²úÉú¶àλÊýºÍ¼ÆË㾫¶ÈËðʧ¡£ * * @param num1±»³ËÊý | num2³ËÊý */ function numMulti(num1, num2) { var baseNum = 0; try { baseNum += num1.toString().split(".")[1].length; } catch (e) { } try { baseNum += num2.toString().split(".")[1].length; } catch (e) { } return Number(num1.toString().replace(".", "")) * Number(num2.toString().replace(".", "")) / Math.pow(10, baseNum); }; /** * ³ý·¨ÔËË㣬±ÜÃâÊý¾ÝÏà³ýСÊýµãºó²úÉú¶àλÊýºÍ¼ÆË㾫¶ÈËðʧ¡£ * * @param num1±»³ýÊý | num2³ýÊý */ function numDiv(num1, num2) { var baseNum1 = 0, baseNum2 = 0; var baseNum3, baseNum4; try { baseNum1 = num1.toString().split(".")[1].length; } catch (e) { baseNum1 = 0; } try { baseNum2 = num2.toString().split(".")[1].length; } catch (e) { baseNum2 = 0; } with (Math) { baseNum3 = Number(num1.toString().replace(".", "")); baseNum4 = Number(num2.toString().replace(".", "")); return (baseNum3 / baseNum4) * pow(10, baseNum2 - baseNum1); } };

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