Question

当我在控制台中执行svg.getAttribute（＆＃34; d＆＃34;）时，我有一串数字：

＆＃34; -0.05990783410138251,0.13594470046082952，-0.06912442396313362,0.14976958525345618，-0.07603686635944701,0.15668202764976957，-0.08755760368663595,0.16589861751152069，-0.09677419354838718,0.16820276497695852，-0.10599078341013829,0.16820276497695852，-0.12211981566820279,0.16820276497695852，-0.13594470046082957,0.16820276497695852，-0.14055299539170513， 0.16820276497695852，-0.14516129032258068,0.16589861751152069，-0.1474654377880184＆＃34;

我希望将其转换为浮点数，所以我做了parseFloat（svg.getAttribute（＆＃34; d＆＃34;））但我得到的只是第一个数字：

-0.05990783410138251

我如何获得所有数字？

由于

Answer 1

使用String.prototype.split()和Array.prototype.map()，您可以获得一系列浮点值，如下所示：

const values = '-0.05990783410138251,0.13594470046082952,-0.06912442396313362,0.14976958525345618,-0.07603686635944701,0.15668202764976957,-0.08755760368663595,0.16589861751152069,-0.09677419354838718,0.16820276497695852,-0.10599078341013829,0.16820276497695852,-0.12211981566820279,0.16820276497695852,-0.13594470046082957,0.16820276497695852,-0.14055299539170513,0.16820276497695852,-0.14516129032258068,0.16589861751152069,-0.1474654377880184';

const floats = values.split(',').map(parseFloat);

console.log(floats);

Answer 2

您可以先使用split()功能将字符串拆分为'，'然后可以应用parseFloat()。

Answer 3

首先需要将其转换为字符串数组，然后您可以单独解析每个字符串。像这样：

var str = svg.getAttribute("d");
var strNums = str.split(',');
var nums = strNums.map(function (num) {
    return parseFloat(num);
});

Answer 4

const numArray = thatStringOfNumbers.split(',').map((num) => parseFloat(num))

我如何从一串数字中返回浮点数？

4 个答案: