如何使用 jQuery 向价格添加尾随零
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/2433122/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to add a trailing zero to a price with jQuery
提问by Nathan Pitman
So I have a script which returns a price for a product. However the price may or may not include trailing zeros so sometimes I might have:
所以我有一个脚本可以返回产品的价格。然而，价格可能包括也可能不包括尾随零，所以有时我可能有：
258.22
258.22
and other times I might have
其他时候我可能有
258.2
258.2
In the later case I need to add the trailing zero with jQuery. How would I go about doing this?
在后一种情况下，我需要使用 jQuery 添加尾随零。我该怎么做呢？
回答by rosscj2533
You can use javascript's toFixedmethod (source), you don't need jQuery. Example:
您可以使用 javascript 的toFixed方法（source），您不需要 jQuery。例子：
var number = 258.2;
var rounded = number.toFixed(2); // rounded = 258.20
Edit: Electric Toolbox link has succumbed to linkrot and blocks the Wayback Machine so there is no working URL for the source.
编辑：Electric Toolbox 链接已屈服于链接腐烂并阻止了 Wayback Machine，因此源没有可用的 URL。
回答by dbrown0708
回答by T.J. Crowder
I don't think jQuery itself has any string padding functions (which is what you're looking for). It's trivial to do, though:
我不认为 jQuery 本身有任何字符串填充函数（这就是你要找的）。不过，这很简单：
function pad(value, width, padchar) {
while (value.length < width) {
value += padchar;
}
return value;
}
EditThe above is great for strings, but for your specific numeric situation, rosscj2533's answeris the better way to go.
编辑以上对字符串非常有用，但对于您的特定数字情况，rosscj2533 的答案是更好的方法。
