Question Details

[solution] » Part 1: Creating a new function In numbers.js, you will need to

Brief item decscription

Step-by-step solution file


Item details:

Part 1: Creating a new function In numbers.js, you will need to
More:Part 1: Creating a new function

In numbers.js, you will need to create a new function called processClick(). This function will take an argument that will allow you to tell it which tile was clicked, so it will need to look something like this

function processClick(tileId){}

. This will create a variable called tileId that you can use anywhere inside the function (within the curly braces), but not outside of it.

Part 2: Calling the function

Your new function will need to be called every time the player clicks a tile. You can achieve this by editing thenumbers.htmlfile and adding an event handler to each different cell in the keypad table. In HTML, a cell is defined by the

<td>

tag and since we are waiting for a click, we need to insert an

onClick

handler to each of those cells. In generic terms, this will look like this (Youmustchange this code to fit your needs; Just copying and pasting this example will not do you any good) :

<td id="myCell" onClick="myfunction(this.id);">

The

this.id

part forwards the id of the cell to the called function so it can properly process the click. By the way,

this

always refers to the object you are currently dealing with, so in this case the applicable

<td>

.

Part 3: Getting stuff from the keypad

You will need to read the content of each clicked cell so that you may swap them around. Once you get the hang of it, it is actually not that hard to get the content in Javascript. The entire page is considered a

document

and everything in the page lives under the

document

object. We can use

document.getElementById(desiredId)

to get any item (technically speaking any "object") from the page. You already know the id of the clicked tile as it was passed to the function from the event handler. So you could use

document.getElementById(tileId)

. This will give you the

<td>

object for the clicked tile. This tile itself has a property (which is sort of like a variable) called innerHTML. So

document.getElementById(tileId).innerHTML

will get you the number that is in the currently clicked cell.

Part 4: Writing stuff to the keypad

Now that you know how to read from innerHTML, writing to it won't a big deal. You can write "I love my cat" to a cell by just assigning that text to

innerHTML

, like so:

document.getElementById(tileId).innerHTML="I love my cat";Part 5: Remembering the tile

The only slightly tricky part is keeping track of the clicked tile. When the player clicks one, you need to know whether he already clicked one before (whether there is an orange tile). If so, you need to perform the swap and turn the tiles white again. If not, you need to turn the clikcked tile orange and somehow remember the fact that this tile was clicked.

You can do this in many ways. However, to make it a little easier for you, we have defined a global variable called clickedcell that initially holds an empty string "". You may use this variable to remember what tile the player has clicked (do not use var to recreate it). Obviously you need to also empty it out after each swap.

Part 6: Changing the color of an object

Each object has many properties and a

<td>

has things such as

innerHTML

and also one called

style

. This lets you change just about everything about how the object looks, including its

style.backgroundColor

which you can read and write the exact same way as

innerHTML

.

Oh, one more thing, colors are defined in hexadecimal RGB space. So orange is #D35400 and white is #FFFFFF. Play around with it a little and see what cool colors you can come up with.

Part 7: The winning condition

The last thing on your to-do list is the winning condition. Every time a user swaps two tiles, you must check whether all of them are in the right place. If so, you will need to congratulate the user by displaying an

alert

message.

And that's pretty much it.

You have just programmed your first real game pretty much from scratch (not the programming language). Amazing, right?

 







About this question:
STATUS
Answered
QUALITY
Approved
ANSWER RATING

This question was answered on: Feb 21, 2020

PRICE: $24

Solution~00065903022.zip (18.37 KB)

Buy this answer for only: $24

This attachment is locked

We have a ready expert answer for this paper which you can use for in-depth understanding, research editing or paraphrasing. You can buy it or order for a fresh, original and plagiarism-free copy (Deadline assured. Flexible pricing. TurnItIn Report provided)

Pay using PayPal (No PayPal account Required) or your credit card. All your purchases are securely protected by PayPal.
SiteLock

Need a similar solution fast, written anew from scratch? Place your own custom order

We have top-notch tutors who can help you with your essay at a reasonable cost and then you can simply use that essay as a template to build your own arguments. This we believe is a better way of understanding a problem and makes use of the efficiency of time of the student. New solution orders are original solutions and precise to your writing instruction requirements. Place a New Order using the button below.

Order Now