javascript jQuery删除类中的最后两个字符
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jQuery Removing last two characters in a class
提问by JaggsWaggert
This should be pretty simple. I'm trying to use the slice method to remove the last two characters in a dynamically created string in a shopping cart.
这应该很简单。我正在尝试使用 slice 方法删除购物车中动态创建的字符串中的最后两个字符。
So instead of having a product show as $28.00, I want the product to show up as $28. Since these values are coming from a database, I can't simply define the string in a variable, like I've seen in a lot of tutorials.
因此，我希望产品显示为 28 美元，而不是将产品显示为 28.00 美元。由于这些值来自数据库，我不能简单地在变量中定义字符串，就像我在很多教程中看到的那样。
I've created a JSFiddle here: http://jsfiddle.net/EbckS/
我在这里创建了一个 JSFiddle：http: //jsfiddle.net/EbckS/
The jQuery that's not working is below:
不起作用的 jQuery 如下：
$(".myclass").slice(0,-2);
回答by Ricardo Alvaro Lohmann
You should use text.
你应该使用text.
$(".slice").text(function(i, text) {
return text.slice(0, -2);
});
iReffers the index position of the element in the settextReffers the old text value
i引用元素在集合中的索引位置text引用旧文本值
回答by RN Kushwaha
Very Simple. I uses this for getting number from a string you can use it too.
很简单的。我使用它来从字符串中获取数字，您也可以使用它。
var height= "800px";
var newheight = height.substring(0,height.length-2); //string 800
newheight= parseFloat(newheight) || 0; //number 800
