根据数组对象的某个字段去重

/**

• 根据数组对象的某个字段去重
• item.name 是[{name:1}] 根据每条数据的name值来去重
• this.answerLiScore = this.unique(this.answerLiScore,‘name’);
• let answerLiScore = [
  {
  name: ‘1’,
  result: ‘rewr’
  },
  {
  name: ‘1’,
  result: ‘rewr5454’
  },
  {
  name: ‘1’,
  result: ‘rewr’
  },
  {
  name: ‘4’,
  result: ‘rewr’
  }
  ];
• */
  const uniqueArr = (arr, val) => {
  const res = new Map();
  return arr.filter(item => !res.has(item[val]) && res.set(item[val], 1))
  }

/**

• 数组字符串字段去重
• let answerLiScore = [1,2，2,3，4,5 ];
• */
  answerLiScore=Array.from(new Set(answerLiScore))