Keep one decimal place without rounding

A valid number is retained. For example, 199.999 is processed as varstrparseFloat (199.999 ). toFixed (10); write 10 here to ensure that the number of decimal places is retained from time to time, and the decimal point behind him is 0 without rounding. The result is the desired va... keep a valid number not rounded in;

Example: 199.999

Processed as follows

Var str = parseFloat (199.999 ). toFixed (10); // write 10 here to ensure that the number of decimal places is retained. The small number next to him is 0 instead of rounding. The result is what you want.

Var num = str. substring (0, str. lastIndexOf ('.') + 2) + "Ten Thousand ";

After the following processing, num becomes 199.9