[Java教程]JS：重量单位换算

0 2015-11-03 14:00:04

//单位换算：数量，原单位，目标单位

var GetNumByUnit = function (num, unitname,outunitname) {

var fRate = {//换算率

ng: { μg: 0.001, mg: 0.001 * 0.001, g: 0.001 * 0.001 * 0.001, kg: 0.001 * 0.001 * 0.001 * 0.001, t: 0.001 * 0.001 * 0.001 * 0.001 * 0.001, ul: 0.001 * 0.001, ml: 0.001 * 0.001 * 0.001, L: 0.001 * 0.001 * 0.001 * 0.001 },

μg: { ng: 1000, mg: 0.001, g: 0.001 * 0.001, kg: 0.001 * 0.001 * 0.001, t: 0.001 * 0.001 * 0.001 * 0.001, ul:0.001, ml:0.001 * 0.001, L:0.001 * 0.001 * 0.001 },

mg: { ng: 1000 * 1000, μg: 1000, g: 0.001, kg: 0.001 * 0.001, t:0.001 * 0.001 * 0.001, ul:1, ml: 0.001, L: 0.001 * 0.001 },

g: { ng: 1000 * 1000*1000, μg: 1000*1000, mg:1000, kg: 0.001, t: 0.001 * 0.001, ul: 1000 , ml: 1, L: 0.001 },

kg: { ng: 1000 * 1000 * 1000 * 1000, μg: 1000 * 1000, mg: 1000, g: 1000, t: 0.001 , ul: 1000 * 1000 , ml: 1000, L: 1 },

t: { ng: 1000 * 1000 * 1000 * 1000 * 1000, μg: 1000 * 1000 * 1000, mg: 1000 * 1000, g: 1000 * 1000, kg: 1000, ul: 1000 * 1000 * 1000, ml: 1000 * 1000, L: 1000 },

ml: { ng: 1000 * 1000 * 1000, μg: 1000 * 1000, mg: 1000, g: 1, kg: 0.001, t: 0.001 * 0.001, ul: 1000 , L: 0.001 },

ul: { ng: 1000 * 1000, μg: 1000, ml: 1, g: 0.001, kg: 0.001 * 0.001, t: 0.001 * 0.001 * 0.001, ml: 0.001, L: 0.001 * 0.001 },

L: { ng: 1000 * 1000 * 1000 * 1000, μg: 1000 * 1000, mg: 1000, g: 1000,kg:1, t: 0.001, ul: 1000 * 1000, ml: 1000 },

};

var tnum = (num * fRate[unitname][outunitname]).toFixed(4);

return tnum;

};

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