Javascript parse float忽略了逗号后的小数 [英] Javascript parse float is ignoring the decimals after my comma

问题描述

这是一个简单的场景。我想在我的网站上显示两个值的减法：

Here's a simple scenario. I want to show the subtraction of two values show on my site:

//Value on my websites HTML is: "75,00"
var fullcost = parseFloat($("#fullcost").text()); 

//Value on my websites HTML is: "0,03"
var auctioncost = parseFloat($("#auctioncost").text());

alert(fullcost); //Outputs: 75
alert(auctioncost); //Ouputs: 0

谁能告诉我我做错了什么？

Can anyone tell me what I'm doing wrong?

推荐答案

这是按设计。 parseFloat 函数只会考虑字符串的部分，直到达到非+， - ，数字，指数或小数点。一旦看到逗号就停止查看，只考虑75部分。

This is "By Design". The parseFloat function will only consider the parts of the string up until in reaches a non +, -, number, exponent or decimal point. Once it sees the comma it stops looking and only considers the "75" portion.

• https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/parseFloat

• https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/parseFloat

要解决此问题，请将逗号转换为小数点。

To fix this convert the commas to decimal points.

var fullcost = parseFloat($("#fullcost").text().replace(',', '.'));

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