I know it's quite low quality of question but I get little bit confused now. Here is the thing What I want to do.
100000 => 100.000
9997080000 => 9997080.000
I want to cut from the third decimal without rounding. How can I do this? I used the toFixed()
but all I want to do is just cut from third decimal. I think I'm complicated now. It will be simple. Plz let me know. Thanks
From what I understand, this is what you want:
var number = "9002764000"; var result = number.slice(0, -3) +"."+ number.slice(-3); console.log(result);
This will add a .
after the last three digits ie 9002764000
-> 9002764.000
https://jsfiddle.net/5yqhr7mo/
Hope it helps!
It sounds like you want a value for display . If so, you want to turn the number into a string (since numbers don't intrinsically have any particular number of digits to the right of the decimal). You can then easily insert the .
before the last three digits using substring
and substr
:
function formatForDisplay(num) { var str = String(num); return str.substring(0, str.length - 3) + "." + str.substr(-3); } function test(num) { console.log(num, "=>", formatForDisplay(num)); } test(100000); test(9997080000);
Alternatively, you could use String#replace
and add a dot.
var number = 9002764000; console.log(Math.floor(number).toString().replace(/(?=...$)/, '.'));
what about :
function formatNumber(num){ num=num/1000; return num.toFixed(3); } console.log(formatNumber(9997080000)); console.log(formatNumber(100000000));
which will return what you expect if you work with integer
Math.floor()
将舍入到四舍五入,从而Math.floor()
小数点右边的所有内容。
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