在Javascript中格式化小数位的问题

Question

I have a problem with decimal places. My code gives me the result 123 123 12, while I need to display the result in the form 12 312 312.

Can anyone help setting this formatting?

Code here:

        var fcqInteger = parseInt(fcq.replace(/\s/g, ''));
        valPrice = parseFloat(valPrice.replace(',', '.'));
        var marketCap = (fcqInteger * valPrice)+'';
        // result
        var marketCapParts = marketCap.match(/[\s\S]{1,3}/g) || []; 
        marketCap = marketCapParts.join(' '); 

Thanks for help.

Answer 1

You could replace with space by looking to the end of the string for groupd of three.

 var data = '12312312' console.log(data.replace(/.{1,3}(?=(...)+$)/g, '$& ')); // replace console.log(data.match(/.{1,3}(?=(...)*$)/g).join(' ')); // match/join

Answer 2

You can use Number.toLocaleString and then replace the , with spaces.

 let num = '123 123 12'; let out = Number(num.replace(/\\s/g, '')).toLocaleString('us-US', {maximumFractionDigits: 5}).replace(/,/g, ' '); console.log(out)