javascript - 通过匹配数组检索值

Question

选中的复选框的值与数组交叉匹配以过滤结果。如何选择价格和手数值？

var inputElements = document.getElementsByName("fruits"); 
const item = [
{"lychee":{ price:10, lot:8}}, 
{"orange" :{ price:12, lot:6}},
{"apple" :{ price:8, lot:3}},
{"mango"  :{ price:12, lot:5}},
{"banana" :{ price:4, lot:1}}];
    
var checked = [...inputElements].map(item => { 
  if(item.checked){ 
    return item.value
   }
}).filter(item => item);

console.log(checked);

 <input type="checkbox" name="fruits" value="lychee" checked>
 <input type="checkbox" name="fruits" value="orange">

Answer 1

带有适当选择器的querySelectorAll将为您提供选中的值:

注意我从对象数组更改为普通对象

const item = { 
  "lychee": {"price": 10,"lot": 8},
  "orange": {"price": 12,"lot": 6},
  "apple":  {"price": 8, "lot": 3},
  "mango":  {"price": 12,"lot": 5},
  "banana": {"price": 4, "lot": 1}
};
let res = [...document.querySelectorAll("[name=fruits]:checked")]
             .map(chk => `${chk.value},lot:${item[chk.value].lot}, price:${item[chk.value].price}`);
document.getElementById("res").innerHTML = res.join("<br/>");

<input type="checkbox" name="fruits" value="lychee" checked> lychee <br />
<input type="checkbox" name="fruits" value="orange"> orange <br />
<input type="checkbox" name="fruits" value="banana" checked> banana <br />
<br/>
<span id="res"></span>