根据名称在数组中查找匹配对象，然后将匹配对象的值相加

function findAndSumObjectsByName(objects, targetName) {
  let sum = 0;
  for (let i = 0; i < objects.length; i++) {
    if (objects[i].name === targetName) {
      sum += objects[i].value;
    }
  }
  return sum;
}

// 示例用法
const objects = [
  { name: 'object1', value: 10 },
  { name: 'object2', value: 20 },
  { name: 'object1', value: 30 },
  { name: 'object3', value: 40 }
];

const targetName = 'object1';
const sum = findAndSumObjectsByName(objects, targetName);
console.log(sum); // 输出 40