为什么Firebug说toFixed()不是函数? [英] Why does Firebug say toFixed() is not a function?
问题描述
我正在使用jQuery 1.7.2和jQuery UI 1.9.1。我在滑块内使用下面的代码。 (http://jqueryui.com/slider/)
I am using jQuery 1.7.2 and jQuery UI 1.9.1. I am using the code below within a slider. (http://jqueryui.com/slider/)
我有一个应该测试两个值的函数,并根据两个值之间的差异重新格式化它们(对于适当的小数位)。如果差异大于10,我将解析整数。如果差值大于5,则应保留一个小数。其他一切,我会保留两位小数。
I have a function that should test two values and depending on the difference between the two values reformat them (to the appropriate decimal place). If the difference is greater than 10, I will parse out the integer. If the difference is greater than 5, it should keep one decimal. Everything else, I will keep two decimals.
当我输入两个差值为10或更小的值时,我使用toFixed()函数。并且,在Firebug中,我看到一个错误:
When I enter two values that have a difference that is ten or less, I use the toFixed() function. And, in Firebug, I see an error:
TypeError: Low.toFixed is not a function
Low = Low.toFixed(2);
有什么简单的我做错了吗?
Is there something simple that I am doing wrong?
这是我的代码:
var Low = $SliderValFrom.val(),
High = $SliderValTo.val();
// THE NUMBER IS VALID
if (isNaN(Low) == false && isNaN(High) == false) {
Diff = High - Low;
if (Diff > 10) {
Low = parseInt(Low);
High = parseInt(High);
} else if (Diff > 5) {
Low = Low.toFixed(1);
High = High.toFixed(1);
} else {
Low = Low.toFixed(2);
High = High.toFixed(2);
}
}
推荐答案
toFixed
不是非数字变量类型的方法。换句话说,低
和高
无法修复,因为当你在Javascript中获得某些东西的价值时,它自动设置为字符串类型。使用 parseFloat()
(或带基数的 parseInt()
,如果它是一个整数)将允许你转换不同的变量类型到数字将使 toFixed()
函数起作用。
toFixed
isn't a method of non-numeric variable types. In other words, Low
and High
can't be fixed because when you get the value of something in Javascript, it automatically is set to a string type. Using parseFloat()
(or parseInt()
with a radix, if it's an integer) will allow you to convert different variable types to numbers which will enable the toFixed()
function to work.
var Low = parseFloat($SliderValFrom.val()),
High = parseFloat($SliderValTo.val());
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