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javascript - 如何在 JavaScript 中删除对象？

问题描述

有一个这样的数组：

var array = [
              {SchoolId: 2  ,GraderId: 465 , SchoolGraderName: "Example1256"},
              {SchoolId: 2  ,GraderId: 654,SchoolGraderName: "Example45"},
              {SchoolId: 2  ,GraderId: 876,SchoolGraderName: "Example895"},
              {SchoolId: 34 ,GraderId: 796,SchoolGraderName:"Example2156"},
              {SchoolId: 45 ,GraderId: 356,SchoolGraderName:"Example315"},
              {SchoolId: 45 ,GraderId: 457,SchoolGraderName:"Example56715"}
              {SchoolId: 45 ,GraderId: 678,SchoolGraderName:"Example37675"}
              {SchoolId: 45 ,GraderId: 465 ,SchoolGraderName:"Example97685615"}
            ]

我正在尝试删除 GraderId 为某个值的整个对象（：

$(function() {
            $("#schoolGraders").on("dblclick",
                function() {
                    $.each(array,function(i,r){
                        if (r.GraderId == $(this).val()) {
                            r.removeItem;
                       }
                });
        });

上面的代码不起作用。

这是 HTML 代码：

<select class="form-control" id="schoolGraders" style="width: 80%; height: 200px" 
multiple></select>

我生成这样的选项：

item = "";
                $.ajax({
                    type: "GET",
                    url: "address" + $(this).val(),
                    contentType: "application/json",
                    dataType: "json"
                }).done(function (res) {
                    var iteem = "";
                    $.each(res,
                        function (i, r) {
                            iteem += '<option value="' + r.id + 
                             '">' + r.title + '</option>';
                        });
                    $("#graderSchools").html(iteem);
                });

JavaScript中是否有任何条件所以我可以删除GraderId是某个值的对象？

标签： javascriptjquery

解决方案

可能是这样的，假设您要删除GraderId为876的对象。

var array = [
              {SchoolId: 2  ,GraderId: 465 , SchoolGraderName: "Example1256"},
              {SchoolId: 2  ,GraderId: 654,SchoolGraderName: "Example45"},
              {SchoolId: 2  ,GraderId: 876,SchoolGraderName: "Example895"},
              {SchoolId: 34 ,GraderId: 796,SchoolGraderName:"Example2156"},
              {SchoolId: 45 ,GraderId: 356,SchoolGraderName:"Example315"},
              {SchoolId: 45 ,GraderId: 457,SchoolGraderName:"Example56715"},
              {SchoolId: 45 ,GraderId: 678,SchoolGraderName:"Example37675"},
              {SchoolId: 45 ,GraderId: 465 ,SchoolGraderName:"Example97685615"}
            ]
            
array.forEach((item, index) => {
    if(item.GraderId === 876){
    delete array[index]
  }
})

console.log(array)

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