javascript - 如何将表示点数的段落值转换为数字的 javascript 值

Question

我想检索表达多个点的段落的内容，并将其值转换为数字的javascript值，以便我可以将其与以相同方式转换的另一个段落的值相加。这是我的代码，不起作用。

HTML:

<p id="paraValue">2589 points</p>
<p id="paraValue2">258</p>

JavaScript:

let getPoint1 = document.getElementById("paraValue").value;
getPoint2 = document.getElementById("paraValue2").value;
if (getPoint1, getPoint2 = Number (paraValue.value, paraValue2.value)
{
  otherParagraph.textContent = (getPoint1 + getPoint2) + " pts";
}

Answer 1

尝试使用parseInt() :

let getPoint1 = document.getElementById("paraValue").innerText;
let getPoint2 = document.getElementById("paraValue2").innerText;

var firstPoints = parseInt(getPoint1);

document.getElementById("paraValue2").innerText = parseInt(firstPoints) + parseInt(getPoint2) + " pts";

<p id="paraValue">2589 points</p>
<p id="paraValue2">258</p>

与 replace功能:

let getPoint1 = document.getElementById("paraValue").innerText;
let getPoint2 = document.getElementById("paraValue2").innerText;

var firstPoints = getPoint1.replace(/[^0-9]/g, '');

document.getElementById("paraValue2").innerText = parseInt(firstPoints) + parseInt(getPoint2) + " pts";

<p id="paraValue">2589 points</p>
<p id="paraValue2">258</p>