这是方案，
HTML，
<div id="output">
</div>
脚本，
var requestedItemsCache=[
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"DetailID":40085,
"PRNo":33420,
"Total":31400,
"Justification":null,
"SAPAssetCode":null,
"InventoryDetails":null,
"DeliveryDate":null,
"DeploymentDate":null,
"CurrentApproverID":null,
"CurrentApproval":false,
"Specification":null,
"StockID":null,
"QuotedPrice":null,
"QuotedTotalPrice":null,
"PONo":null,
"Remarks":"For PO",
"DeptStockID":null,
"Confirmation":null,
"Flag":0,
"ApprovalFlag":0,
"SerialNo":null,
"SubItems":[
{
"DetailID":40086,
"PRNo":33420,
"Total":0,
"Justification":null,
"SAPAssetCode":null,
"InventoryDetails":null,
"DeliveryDate":null,
"DeploymentDate":null,
"CurrentApproverID":null,
"CurrentApproval":false,
"Specification":null,
"StockID":null,
"QuotedPrice":null,
"QuotedTotalPrice":null,
"PONo":null,
"Remarks":"For PO",
"DeptStockID":null,
"Confirmation":null,
"Flag":0,
"ApprovalFlag":0,
"SerialNo":null,
"SubItems":null,
"ParentID":null,
"ItemID":1051,
"ItemDescription":"CPU Core i3, HDD 500GB SATA, RAM 4GB, Windows 7 Professional, 64-bit",
"Price":0,
"ItemCatSubID":1063,
"SubCategoryName":"Peripherals & Accessories",
"Brand":"Lenovo",
"Model":"Thinkcentre M72e",
"Unit":null,
"UnitID":0,
"ItemHeaderID":1023,
"GenericName":"CPU",
"ItemCatID":0,
"Quantity":1,
"IsActive":0,
"IsComponent":0,
"isAsset":1,
"SubCatalogs":null
},
{
"DetailID":40087,
"PRNo":33420,
"Total":0,
"Justification":null,
"SAPAssetCode":null,
"InventoryDetails":null,
"DeliveryDate":null,
"DeploymentDate":null,
"CurrentApproverID":null,
"CurrentApproval":false,
"Specification":null,
"StockID":null,
"QuotedPrice":null,
"QuotedTotalPrice":null,
"PONo":null,
"Remarks":"For PO",
"DeptStockID":null,
"Confirmation":null,
"Flag":0,
"ApprovalFlag":0,
"SerialNo":null,
"SubItems":null,
"ParentID":null,
"ItemID":1052,
"ItemDescription":"LCD Monitor LCD Display 19” ",
"Price":0,
"ItemCatSubID":1063,
"SubCategoryName":"Peripherals & Accessories",
"Brand":"Lenovo",
"Model":"ThinkVision L197Wa",
"Unit":null,
"UnitID":0,
"ItemHeaderID":1019,
"GenericName":"Monitor",
"ItemCatID":0,
"Quantity":1,
"IsActive":0,
"IsComponent":0,
"isAsset":1,
"SubCatalogs":null
},
{
"DetailID":40088,
"PRNo":33420,
"Total":0,
"Justification":null,
"SAPAssetCode":null,
"InventoryDetails":null,
"DeliveryDate":null,
"DeploymentDate":null,
"CurrentApproverID":null,
"CurrentApproval":false,
"Specification":null,
"StockID":null,
"QuotedPrice":null,
"QuotedTotalPrice":null,
"PONo":null,
"Remarks":"For PO",
"DeptStockID":null,
"Confirmation":null,
"Flag":0,
"ApprovalFlag":0,
"SerialNo":null,
"SubItems":null,
"ParentID":null,
"ItemID":1053,
"ItemDescription":"Keyboard Qwerty, USB",
"Price":0,
"ItemCatSubID":1063,
"SubCategoryName":"Peripherals & Accessories",
"Brand":"Lenovo",
"Model":"SK-8820",
"Unit":null,
"UnitID":0,
"ItemHeaderID":1018,
"GenericName":"Keyboard",
"ItemCatID":0,
"Quantity":1,
"IsActive":0,
"IsComponent":0,
"isAsset":1,
"SubCatalogs":null
},
{
"DetailID":40089,
"PRNo":33420,
"Total":0,
"Justification":null,
"SAPAssetCode":null,
"InventoryDetails":null,
"DeliveryDate":null,
"DeploymentDate":null,
"CurrentApproverID":null,
"CurrentApproval":false,
"Specification":null,
"StockID":null,
"QuotedPrice":null,
"QuotedTotalPrice":null,
"PONo":null,
"Remarks":"For PO",
"DeptStockID":null,
"Confirmation":null,
"Flag":0,
"ApprovalFlag":0,
"SerialNo":null,
"SubItems":null,
"ParentID":null,
"ItemID":1054,
"ItemDescription":"Mouse Optical, USB ",
"Price":0,
"ItemCatSubID":1063,
"SubCategoryName":"Peripherals & Accessories",
"Brand":"Lenovo",
"Model":"LXB MO28UOA ",
"Unit":null,
"UnitID":0,
"ItemHeaderID":1016,
"GenericName":"Mouse",
"ItemCatID":0,
"Quantity":1,
"IsActive":0,
"IsComponent":0,
"isAsset":1,
"SubCatalogs":null
}
],
"ParentID":null,
"ItemID":1016,
"ItemDescription":"Lenovo Desktop; Office Worker 1 as General User Core i3, HDD 500GB SATA, RAM 4GB, LCD Display 20”, Windows 7 Professional, 64-bit, CPU Warranty 5/5/5, Monitor Warranty 3/3/3",
"Price":31400,
"ItemCatSubID":1061,
"SubCategoryName":"Computers",
"Brand":"Lenovo",
"Model":"Thinkcentre M72e",
"Unit":null,
"UnitID":0,
"ItemHeaderID":1001,
"GenericName":"Desktop for Office Worker 1 (General User)",
"ItemCatID":0,
"Quantity":1,
"IsActive":0,
"IsComponent":1,
"isAsset":1,
"SubCatalogs":null
}
];
var additionalData={"ItemID":1016,"ItemDescription":"Core i3, HDD 500GB SATA, RAM 4GB, LCD Display 20”, Windows 7 Professional, 64-bit, CPU Warranty 5/5/5, Monitor Warranty 3/3/3","Price":31400,"ItemCatSubID":1061,"SubCategoryName":"Computers","Brand":"Lenovo","Model":"Thinkcentre M72e","Unit":"Unit","UnitID":478,"ItemHeaderID":1001,"GenericName":"Desktop for Office Worker 1 (General User)","ItemCatID":1001,"Quantity":1,"IsActive":1,"IsComponent":1,"isAsset":1,"SubCatalogs":[{"ItemID":1051,"ItemDescription":"Core i3, HDD 500GB SATA, RAM 4GB, Windows 7 Professional, 64-bit","Price":27500,"ItemCatSubID":1063,"SubCategoryName":"Peripherals & Accessories","Brand":"Lenovo","Model":"Thinkcentre M72e","Unit":"Unit","UnitID":478,"ItemHeaderID":1023,"GenericName":"CPU","ItemCatID":1001,"Quantity":1,"IsActive":1,"IsComponent":0,"isAsset":1,"SubCatalogs":null},{"ItemID":1052,"ItemDescription":"LCD Display 19” ","Price":0,"ItemCatSubID":1063,"SubCategoryName":"Peripherals & Accessories","Brand":"Lenovo","Model":"ThinkVision L197Wa","Unit":"Unit","UnitID":478,"ItemHeaderID":1019,"GenericName":"Monitor","ItemCatID":1001,"Quantity":1,"IsActive":1,"IsComponent":0,"isAsset":1,"SubCatalogs":null},{"ItemID":1053,"ItemDescription":"Qwerty, USB","Price":0,"ItemCatSubID":1063,"SubCategoryName":"Peripherals & Accessories","Brand":"Lenovo","Model":"SK-8820","Unit":"Unit","UnitID":478,"ItemHeaderID":1018,"GenericName":"Keyboard","ItemCatID":1001,"Quantity":1,"IsActive":1,"IsComponent":0,"isAsset":1,"SubCatalogs":null},{"ItemID":1054,"ItemDescription":"Optical, USB ","Price":600,"ItemCatSubID":1063,"SubCategoryName":"Peripherals & Accessories","Brand":"Lenovo","Model":"LXB MO28UOA ","Unit":"Unit","UnitID":478,"ItemHeaderID":1016,"GenericName":"Mouse","ItemCatID":1001,"Quantity":1,"IsActive":1,"IsComponent":0,"isAsset":1,"SubCatalogs":null}],"Flag":1000,"ApprovalFlag":1,"Total":31400,"SubItems":null};
requestedItemsCache.push(additionalData);
requestedItemsCache.push(additionalData);
requestedItemsCache.push(additionalData);
var x=document.getElementById("output");
/*RENDER ORIGINAL SCHEMA*/
x.innerHTML = "Original Value : " + x.innerHTML + requestedItemsCache[0].Flag + "<br/>";
requestedItemsCache[0].Flag=2000;
x.innerHTML = x.innerHTML+ "Update Value : " + requestedItemsCache[0].Flag + "<br/><br/> THIS IS OK! </br/><br/>";
/*ORIGINAL VALUE*/
x.innerHTML =x.innerHTML+"Original Value Index 1 : " +(requestedItemsCache[1].Flag) + "<br/>";
x.innerHTML =x.innerHTML+"Original Value Index 2 : " +(requestedItemsCache[2].Flag) + "<br/>";
x.innerHTML =x.innerHTML+"Original Value Index 3: " +(requestedItemsCache[3].Flag) + "<br/><br/><br/";
/*BUG IN UPDATING JSON OBJECT*/
x.innerHTML = x.innerHTML+ " Update element at index 1" + "<br/><br/><br/>";
requestedItemsCache[3].Flag=3000;
x.innerHTML =x.innerHTML+"Updated Value Index 1 : " +(requestedItemsCache[1].Flag) + "<br/>";
x.innerHTML =x.innerHTML+"Updated Value Index 2 : " +(requestedItemsCache[2].Flag) + "<br/>";
x.innerHTML =x.innerHTML+"Updated Value Index 3: " +(requestedItemsCache[3].Flag) + "<br/>";
console.log(requestedItemsCache[1].Flag);
console.log(requestedItemsCache[2].Flag);
console.log(requestedItemsCache[3].Flag);
答案 0 :(得分：0)
你的问题来自那里：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace windowsForApplication15
{
public partial class Form1 : Form
{
public enum Directions
{
right,
left,
up,
down
}
private Directions car_direction;
//value for fall speed
int G = 15;
int force;
//determines wheather car is gonna jump or not
bool jump;
//boxes from right
public PictureBox[] right_matrix = new PictureBox[5];
public Form1()
{
InitializeComponent();
jump = false;
}
/// <summary>
/// timer for controlling car
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Form1_Load(object sender, EventArgs e)
{
//to creating 5 boxes
create_box(5);
}
private void timer1_Tick(object sender, EventArgs e)
{
//if jump is true
if (jump)
{
//start falling
car.Top -= force;
force -= 1;
}
//being able to stay top of block(I couldun't make my car stay specific point when falling is stop so created a block ,which is transparent in my winform
//so car can stop when faling is finish)
if (car.Left + car.Width - 1 > block.Left && car.Left + car.Width + 5 < block.Left + block.Width + car.Width
&& car.Top + car.Height >= block.Top && car.Top < block.Top)
{
car.Top = panel1.Height - block.Height - car.Height;
force = 0;
jump = false;
}
}
private void Form1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Right && car_direction != Directions.right)
{
car.Location = new Point(car.Location.X + 130, car.Location.Y);
car_direction = Directions.right;
}
if (e.KeyCode == Keys.Left && car_direction != Directions.left)
{
car.Location = new Point(car.Location.X - 130, car.Location.Y);
car_direction = Directions.left;
}
if (!jump && e.KeyCode == Keys.Up)
{
jump = true;
force = G;
}
}
/// <summary>
/// craeting boxes,which are gonne be what want to avoid from
/// </summary>
/// <param name="value"></param>
private void create_box(int value)
{
Random rnd = new Random();
for (int i = 0; i <= value; i++)
{
int number = rnd.Next(0, 7);
PictureBox boxes_right = new PictureBox();
panel1.Controls.Add(boxes_right);
boxes_right.Width = 50;
boxes_right.Height = 15;
boxes_right.BorderStyle = BorderStyle.FixedSingle;
boxes_right.Top = (i * 20) + 152;
boxes_right.Left = 312;
right_matrix[i] = boxes_right;
right_matrix[i].Visible = true;
switch (number)
{
case 1:
boxes_right.BackColor = Color.Red;
break;
case 2:
boxes_right.BackColor = Color.BlueViolet;
break;
case 3:
boxes_right.BackColor = Color.Pink;
break;
case 4:
boxes_right.BackColor = Color.Black;
break;
case 5:
boxes_right.BackColor = Color.Brown;
break;
case 6:
boxes_right.BackColor = Color.MistyRose;
break;
case 7:
boxes_right.BackColor = Color.Green;
break;
}
}
}
/// <summary>
/// it is used to controlling boxes movement
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void timer2_Tick(object sender, EventArgs e)
{
Random rastgele = new Random();
//shifting boxes aganist bottom of form.
for (int i = 0; i < 1; i++)
{
int number_2 = rastgele.Next(0, 7);
right_matrix[i].Top += (right_matrix[i].Top / 28) - 2;
right_matrix[i].Width += +1;
//if collision is true
if (Collision(right_matrix[i], car))
{
//stop application
Application.Exit();
}
//if box touches the block
if (right_matrix[i].Bottom > block.Top + 25)
{
//make it be in from the top
right_matrix[i].Top = 152;
right_matrix[i].Width = 50;
right_matrix[i].Height = 15;
//for changing boxes color
switch (number_2)
{
case 1:
right_matrix[i].BackColor = Color.Red;
break;
case 2:
right_matrix[i].BackColor = Color.BlueViolet;
break;
case 3:
right_matrix[i].BackColor = Color.Pink;
break;
case 4:
right_matrix[i].BackColor = Color.Black;
break;
case 5:
right_matrix[i].BackColor = Color.Brown;
break;
case 6:
right_matrix[i].BackColor = Color.MistyRose;
break;
case 7:
right_matrix[i].BackColor = Color.Green;
break;
}
}
}
}
/// <summary>
/// To finish game when car crushes box
/// </summary>
/// <param name="Object1"></param>
/// <param name="Object2"></param>
/// <returns></returns>
private bool Collision(dynamic Object1, dynamic Object2)
{
bool Collided = false;
if (Object1.Top + Object1.Height <= Object2.Top + 5 & Object1.Top + Object1.Height >= Object2.Top & Object1.Left == Object2.Left)
{
if (Object1.Visible == true & Object2.Visible == true & jump == false)
{
Collided = true;
}
}
return Collided;
}
}
}
您将相同的对象推送到requestedItemsCache，因此当您稍后在一个引用中进行更改时，其他引用也会收到修改，因为它们是同一个对象。
如果您使用以下内容，则不会发生：
var additionalData={...};
requestedItemsCache.push(additionalData);
requestedItemsCache.push(additionalData);
requestedItemsCache.push(additionalData);