JavaScript格式化数字
使用JavaScript格式化数字的字符串例如：1234567 -- > 1,234,567 #,#00
1234567 -- > 1,234,567.00 #,#00.00
JavaScript函数
function formatNumber(number,pattern){ var str = number.toString(); var negative = false; if(str.startWith("-")){ str = str.substring(1); number = - number; negative = true; } var strInt; var strFloat; var formatInt; var formatFloat; if(/\./g.test(pattern)){ formatInt = pattern.split('.'); formatFloat = pattern.split('.'); }else{ formatInt = pattern; formatFloat = null; } if(/\./g.test(str)){ if(formatFloat!=null){ var tempFloat = Math.round(parseFloat('0.'+str.split('.'))*Math.pow(10,formatFloat.length))/Math.pow(10,formatFloat.length); strInt = (Math.floor(number)+Math.floor(tempFloat)).toString(); strFloat = /\./g.test(tempFloat.toString())?tempFloat.toString().split('.'):'0'; }else{ strInt = Math.round(number).toString(); strFloat = '0'; } }else{ strInt = str; strFloat = '0'; } if(formatInt!=null){ var outputInt = ''; var zero = formatInt.match(/0*$/).length; var comma = null; if(/,/g.test(formatInt)){ comma = formatInt.match(/,[^,]*/).length-1; } var newReg = new RegExp('(\\d{'+comma+'})','g'); if(strInt.length<zero){ outputInt = new Array(zero+1).join('0')+strInt; outputInt = outputInt.substr(outputInt.length-zero,zero) }else{ outputInt = strInt; } var outputInt = outputInt.substr(0,outputInt.length%comma)+outputInt.substring(outputInt.length%comma).replace(newReg,(comma!=null?',':'')+'$1') outputInt = outputInt.replace(/^,/,''); strInt = outputInt; } if(formatFloat!=null){ var outputFloat = ''; var zero = formatFloat.match(/^0*/).length; if(strFloat.length<zero){ outputFloat = strFloat+new Array(zero+1).join('0'); // outputFloat = outputFloat.substring(0,formatFloat.length); var outputFloat1 = outputFloat.substring(0,zero); var outputFloat2 = outputFloat.substring(zero,formatFloat.length); outputFloat = outputFloat1+outputFloat2.replace(/0*$/,''); }else{ outputFloat = strFloat.substring(0,formatFloat.length); } strFloat = outputFloat; }else{ if(pattern!='' || (pattern=='' && strFloat=='0')){ strFloat = ''; } } return (negative?"-":"")+strInt+(strFloat==''?'':'.'+strFloat); // return strInt+(strFloat==''?'':'.'+strFloat);}
页:
[1]