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分享5个javascript的数字格式化函数
Javascript没有任何内建的格式化函数,这里我们通过Google收集了5个javascript的数字格式化函数,希望对于大家的web开发能够带来方便。
十进制四舍五入
这两段代码帮助你做到四舍五入,对于你显示价格或者订单比较有用:
代码1:- function CurrencyFormatted(amount) {
- var i = parseFloat(amount);
- if(isNaN(i)) { i = 0.00; }
- var minus = '';
- if(i < 0) { minus = '-'; }
- i = Math.abs(i);
- i = parseInt((i + .005) * 100);
- i = i / 100;
- s = new String(i);
- if(s.indexOf('.') < 0) { s += '.00'; }
- if(s.indexOf('.') == (s.length - 2)) { s += '0'; }
- s = minus + s;
- return s;
- }
-
- /**
- * Usage: CurrencyFormatted(12345.678);
- * result: 12345.68
- **/代码2:
- function format_number(pnumber,decimals){
- if (isNaN(pnumber)) { return 0};
- if (pnumber=='') { return 0};
-
- var snum = new String(pnumber);
- var sec = snum.split('.');
- var whole = parseFloat(sec[0]);
- var result = '';
-
- if(sec.length > 1){
- var dec = new String(sec[1]);
- dec = String(parseFloat(sec[1])/Math.pow(10,(dec.length - decimals)));
- dec = String(whole + Math.round(parseFloat(dec))/Math.pow(10,decimals));
- var dot = dec.indexOf('.');
- if(dot == -1){
- dec += '.';
- dot = dec.indexOf('.');
- }
- while(dec.length <= dot + decimals) { dec += '0'; }
- result = dec;
- } else{
- var dot;
- var dec = new String(whole);
- dec += '.';
- dot = dec.indexOf('.');
- while(dec.length <= dot + decimals) { dec += '0'; }
- result = dec;
- }
- return result;
- }
-
- /**
- * Usage: format_number(12345.678, 2);
- * result: 12345.68
- **/
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