如何使用jQuery向价格添加尾随零

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。但是价格可能包括也可能不包括尾随零，所以有时我可能会：

258.22

258.22

and other times I might have

和其他时间我可能有

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？

3 个解决方案

#1

You can use javascript's toFixed method (source), you don't need jQuery. Example:

你可以使用javascript的toFixed方法（源码），你不需要jQuery。例：

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：电子工具箱链接已经屈服于linkrot并阻止了Wayback Machine，因此没有源的工作URL。

#2

Javascript has a function - toFixed - that should do what you want ... no JQuery needed.

Javascript有一个函数 - toFixed - 应该做你想要的...没有JQuery需要。

var n = 258.2;
n.toFixed (2);  // returns 258.20

#3

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功能（这是你正在寻找的）。但这样做很简单：

function pad(value, width, padchar) {

    while (value.length < width) {
        value += padchar;
    }
    return value;
}

Edit The above is great for strings, but for your specific numeric situation, rosscj2533's answer is the better way to go.

编辑以上内容非常适合字符串，但对于您的特定数字情况，rosscj2533的答案是更好的方法。