js加减乘除运算法封装
//乘法
消费心理学accMul :function (arg1,arg2) {
var me = this;
if(typeof arg1 === 'string'){
arg1 = Number(arg1);
}
if(typeof arg2 === 'string'){
arg2 = Number(arg2);
}
var m=0,String(),String();
try{m+=s1.split(".")[1].length}catch(e){}
try{m+=s2.split(".")[1].length}catch(e){}
return me.keepDecimals(place(".",""))*place(".",""))/Math.pow(10,m),2);
} ,
//除法
accDiv : function (a, b) {
var me = this;
if(typeof a === 'string'){
a = Number(a);
}
if(typeof b === 'string'){
b = Number(b);
}
var c, d, e = 0,
f = 0;
try {
e = a.toString().split(".")[1].length;
} catch (g) {}
try {
f = b.toString().split(".")[1].length;
} catch (g) {}
return c = String().replace(".", "")), d = String().replace(".", "")), me.keepDecimals(me.accMul(c / d, Math.pow(10, f - e)),2); },
//加法
accAdd : function(arg1,arg2){
var me = this;2d和3d的区别
if(typeof arg1 === 'string'){
花毛一体arg1 = Number(arg1);
}
新鲜蚕豆if(typeof arg2 === 'string'){
arg2 = Number(arg2);
}
var r1,r2,m;
try{String().split(".")[1].length}catch(e){r1=0}
连接词英语try{String().split(".")[1].length}catch(e){r2=0}
m=Math.pow(10,Math.max(r1,r2))
return me.keepDecimals((arg1*m+arg2*m)/m,2);
},
//减法
floatSub: function (arg1,arg2){
var me = this;
if(typeof arg1 === 'string'){
追逐者arg1 = Number(arg1);
}
if(typeof arg2 === 'string'){
arg2 = Number(arg2);
}
var r1,r2,m,n;
try{String().split(".")[1].length}catch(e){r1=0}
try{String().split(".")[1].length}catch(e){r2=0}
m=Math.pow(10,Math.max(r1,r2));
n=(r1>=r2)?r1:r2;
n=(r1>=r2)?r1:r2;
return me.keepDecimals(Ext.und(((arg1*m-arg2*m)/m), n),2); },
// val要保留的数据，places保留位数，type返回类型（1数字，2字符串）
keepDecimals : function(val, places, type) {
if(typeof type === 'undefined') type = 1;
var num = val + '';
var numStart = num.split('.')[0];
var numEnd = num.split('.')[1];
var powVal = Math.pow(10, places);
if (numEnd) {
num = und(num * powVal) / powVal + ''
if (num.split('.')[1]&&num.split('.')[1].length < places) {
for (var n = 0; n < places - num.split('.')[1].length; n++) {
num += '0'
}
}
哭丧着脸} el {
num = numStart + '.'
for (var n = 0; n < places; n++) {学骑自行车作文600字
num += '0'
}
}
return type==1?num=num*1:num=num+''
}
