如何使用美元符号和逗号的替换方法？

Question

我想完成两件事，将余额解析为整数（我假设这是必需的），然后使用 reduce 方法将总余额相加。我不知道删除逗号的最佳方法？或者我应该改用 splice 吗？如果 reduce 方法现在添加它们，它只会在逗号前添加第一个数字，因此 1,1,8.

const data = [{
    index: "14",
    name: "Bob",
    balance: ",000",
  },
  {
    index: "23",
    name: "John",
    balance: ",200",
  },
  {
    index: "17",
    name: "Steve",
    balance: ",000",
  },
];

const balances = data.map((amount) => {
  var newAmount = parseFloat(amount.balance.replace(/$/g, ""));
  return newAmount;
});

console.log(balances);

const reducer = (accumulator, currentValue) => accumulator + currentValue;
console.log(balances.reduce(reducer));

这将尝试删除 $ 并将余额相加并显示出来。但是我也不知道如何删除逗号（应该修复它）？

Answer 1

使用替换

const data = [
  {
    index: "14",
    name: "Bob",
    balance: ",000",
  },
  {
    index: "23",
    name: "John",
    balance: ",200",
  },
  {
    index: "17",
    name: "Steve",
    balance: ",000",
  },
];
const result = data
  .map((o) => parseFloat(o.balance.replace(/[$,]/g, "")))
  .reduce((acc, curr) => acc + curr, 0);

console.log(result);

使用匹配

const data = [{
    index: "14",
    name: "Bob",
    balance: ",000",
  },
  {
    index: "23",
    name: "John",
    balance: ",200",
  },
  {
    index: "17",
    name: "Steve",
    balance: ",000",
  },
];

const result = data
  .map((o) => {
    return +o.balance.match(/[\d]+/g).join("");
  })
  .reduce((acc, curr) => acc + curr, 0);

console.log(result);

或

const data = [
  {
    index: "14",
    name: "Bob",
    balance: ",000",
  },
  {
    index: "23",
    name: "John",
    balance: ",200",
  },
  {
    index: "17",
    name: "Steve",
    balance: ",000",
  },
];

const result = data
  .map((o) => parseFloat(o.balance.match(/[\d]+/g).join("")))
  .reduce((acc, curr) => acc + curr, 0);

console.log(result);

Answer 2

您可以使用 character class [$,] 接受方括号内的任何一个字符。

const getAmount = (amount) => {
  return parseFloat(amount.replace(/[$,]/g, ""));
}

console.log(getAmount("3,45.132"));

如何使用美元符号和逗号的替换方法？

How to use replace method for dollar sign and comma?

javascript

reduce

parsing

replace