将数组转换为单独的参数字符串

const array = ['apple', 'banana', 'orange'];

let parameterString = '';
array.forEach((item, index) => {
  parameterString += `${index > 0 ? '&' : ''}${item}=${encodeURIComponent(item)}`;
});
console.log(parameterString);

apple=apple&banana=banana&orange=orange

const parameterString = array.map((item, index) => {
  return `${index > 0 ? '&' : ''}${item}=${encodeURIComponent(item)}`;
}).join('');
console.log(parameterString);

apple=apple&banana=banana&orange=orange