user610728 - 10 months ago 77

jQuery Question

I'm trying to create a function that can format a number with the minimum decimal places of 2 and a maximum of 4. So basically if I pass in 354545.33 I would get back 354,545.33 and if I pass in 54433.6559943 I would get back 54,433.6559.

`function numberFormat(num){`

num = num+"";

if (num.length > 0){

num = num.toString().replace(/\$|\,/g,'');

num = Math.floor(num * 10000) / 10000;

num += '';

x = num.split('.');

x1 = x[0];

x2 = x.length > 1 ? '.' + x[1] : '';

var rgx = /(\d+)(\d{3})/;

while (rgx.test(x1)) {

x1 = x1.replace(rgx, '$1' + ',' + '$2');

}

return x1 + x2;

}

else{

return num;

}

}

Answer Source

```
value.toLocaleString('en-US', {
minimumFractionDigits: 2,
maximumFractionDigits: 4
});
```

Do not forget to include polyfill.

To format a part, after decimal point you can use this:

```
value.toFixed(4).replace(/0{0,2}$/, "");
```

And for part before decimal point: How to write this JS function in best(smartest) way?