变量那些事

    <script>
        var arr = [{name:"cheng"},{name:"li"},{name:"zhang"}];
        var o = arr[0];
        var obj = {name:"cheng"}
        var newArr = arr.filter(item=>item!==o);
        console.log(newArr)
        console.log(o);
        console.log(obj);
        console.log(o==obj);
    </script>