对象数组去重的方法: 方法一: constarr=[{name:'tom',age:12,key:1,},{name:'jurry',age:10,key:2,},{name:'jurry',age:10,key:2,},{name:'tom',age:12,key:1,}];console.info('原始数组:',arr);constkeyArr=[];arr.forEach((element,index)=>{keyArr.push(element.key);// 通过key来...