js example of precision processing of decimal addition_javascript skills

Copy code The code is as follows:

zf = accAdd(zf, parseFloat("12.11"));
//Addition function, used to obtain accurate addition results
//Explanation: The addition result of JavaScript will have errors, which will be more obvious when adding two floating point numbers. This function returns a more accurate addition result.
//Call: accAdd(arg1,arg2)
//Return value: the exact result of arg1 plus arg2
function accAdd(arg1,arg2){
var r1,r2,m;
try{r1=arg1.toString().split(".")[1].length}catch(e){r1=0}
try{r2=arg2.toString().split(". ")[1].length}catch(e){r2=0}
m=Math.pow(10,Math.max(r1,r2));
return (arg1*m arg2*m) /m;
}