And those are two ways you can format a number with commas using JavaScript. Formatting a number using regex andreplace()method is always faster than usingtoLocaleString()becausetoLocaleString()method needs to check out the localization (country) selected by your computer or JavaScript engine first ...
Print a number with commas as thousands of separators in JavaScript var n = 1234.567; function numberWithCommas(x) { return x.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ","); } console.log(numberWithCommas(n)); Use toLocaleString // With custom settings, forcing a "US" ...
方法二、利用循环 实现思路是将数字转换为字符数组,再循环整个数组, 每三位添加一个分隔逗号,最后再合并成字符串。 functionnumberWithCommas(x){x=x.toString();varpattern=/(-?\d+)(\d{3})/;while(pattern.test(x))x=x.replace(pattern,"$1,$2");returnx;}numberWithCommas(12312124545);//'12,312...
In this article we will show you the solution of JavaScript format number with commas and decimal, we will use the toLocaleString() method and also a custom function to format the number.JavaScript provides a built-in method called'toLocaleString()', which can format numbers with commas and ...
function numberWithCommas(n) { var parts=n.toString().split("."); return parts[0].replace(/\B(?=(\d{3})+(?!\d))/g, ",") + (parts[1] ? "." + parts[1] : ""); } Copy Code Related Searches to Print a number with commas as thousands separators in JavaScript -java...
UsetoLocaleString()to Format Number With Commas in JavaScript ThetoLocaleString()methodreturns a string with the language-sensitive representation of a number, and these strings are always separated with the help of commas. Initially, the US format is followed by default to display a number. ...
// Nice regex from http://stackoverflow.com/questions/2901102/how-to-print-number-with-commas-as-thousands-separators-in-javascript function addSep(numberString) { var parts = numberString.split('.'); parts[0] = parts[0].replace(/\B(?=(\d{3})+(?!\d))/g, ","); return p...
letformattedNumber=number.toFixed(decimalPlaces);// 保留特定小数位数letnumberWithCommas=number.toLocaleString();// 添加千位分隔符 1. 2. 在上述代码中,我们使用了toFixed()和toLocaleString()函数来格式化数字的显示方式。 总结 通过以上步骤,我们可以在 JavaScript 中定义数字类型,并进行各种基本操作和高级数学运...
functionnumberWithCommas(x=0){returnx.toString().replace(/\B(?=(\d{3})+(?!\d))/g,',')}numberWithCommas(123)// => 123numberWithCommas(1234)// => 1,234 \B代表匹配一个非单词边界,也就是说,实际他并不会替换掉任何的元素。 其次,后边的非捕获组这么定义:存在三的倍数个数字(3、6、9...
Write a JavaScript function that formats a number with commas as thousands separators using a regular expression. Write a JavaScript function that manually inserts commas into a number by converting it to a string and processing its digits.