如何使用替换从字符串中删除 $ 符号？

问题描述

我无法从余额属性中删除美元符号，我不确定我缺少什么？我还以为是 string.replace(searchvalue,newvalue)??

const data = [{
    index: "14",name: "Bob",balance: "$100",},{
    index: "23",name: "John",balance: "$120",{
    index: "17",name: "Steve",balance: "$80",];

const balances = data.map((amount) => {
  var newAmount = amount.replace("$","");
  console.log(newAmount);
});

我想要的：

100
120
80

解决方法

您只是忘记获取每个项目的 balance 属性。

const data = [{
    index: "14",name: "Bob",balance: "$100",},{
    index: "23",name: "John",balance: "$120",{
    index: "17",name: "Steve",balance: "$80",];

data.forEach((item) => {
  var newAmount = item.balance.replace("$","");
  console.log(newAmount);
});

,

我只是忘记了 .balance 谢谢你们

const data = [{
    index: "14",];

const balances = data.map((amount) => {
  var newAmount = amount.balance.replace("$","");
  console.log(newAmount);
});

,

检查以下代码

const data = [{
    index: "14",];
const modifiedData = data.map((amount) => {
const oldBalance=amount.balance;// here we cache old value
 amount.balance=oldBalance.replace("$","");// here we assign the modified value
console.log(amount.balance);

return amount;
});

console.log(modifiedData);

,

请使用此代码片段。我希望这段代码适合你。

const balances = data.map((amount) => {
    const newAmount = amount[balance].replace("$","");
    console.log(newAmount)
})