2023 Using the comments within the HTML Code write the necassary missing Javascript DOCTYPE | Assignment Collections
Computer Science 2023 Help With Writing Javascript Within An HTML Document
2023 Using the comments within the HTML Code write the necassary missing Javascript DOCTYPE | Assignment Collections
Using the comments within the HTML Code write the necassary missing Javascript:
<!DOCTYPE html>
<html>
<head>
<style>
div#memory_board
{
background:#CCC;
border:#999 1px solid;
width:800px;
height:540px;
padding:24px;
margin:0px auto;
}
div#memory_board > div
{
background: pink;
border:#000 1px solid;
width:71px;
height:71px;
float:left;
margin:10px;
padding:20px;
font-size:64px;
cursor:pointer;
text-align:center;
}
</style>
<script>
// global variable declaration
// TODO declare array “memory_array” that contains 24 items, 12 pairs (e.g. A, A, B, B, etc…)
// TODO declare array “memory_values” with no data
// TODO declare array “memory_tile_ids” with no data
// TODO declare a variable for keeping tracking of how many tiles are flipped
// TODO add an anonymous function to the Array object called memory_tile_shuffle
Array.prototype.memory_tile_shuffle = function()
{
// TODO declare variable “length” set equal to the length of the array
// TODO declare variable “rand”
// TODO declare variable “temp”
// TODO loop while the value of –length (using predecrement) is greater than 0
while()
{
//TODO set variable rand equal to Math.floor(Math.random() * (length + 1))
// TODO set variable temp equal to this array at index rand
// TODO set this array index rand equal to this array index length
// TODO set this array index length equal to temp
}
}
// TODO write function newBoard, no parameters, to reset data for the game
function
{
// TODO reset variable for tiles flipped to equal 0
// TODO create a variable for output set equal to an empty string
// TODO call anonymous function memory_tile_shuffle
// TODO perform a for loop from index 0 to the length of memory_array
for()
{
// TODO concatenate variable “output” to equal
// ‘<div id=”tile_’
// concatenate the looping variable
// concatenate ‘” onclick=”memoryFlipTile(this,”
// concatenate memory_array with index of the looping variable
// concatenate ”)”></div>’
}
// TODO update the document object, element id called ‘memory_board’, innerHTML
// so it is equal to the output variable
}
// TODO write function memoryFlipTile with parameters tile and val
function
{
// TODO check if the innerHTML of object tile is equal to “” and
// the length of array memory_values is less than 2
if()
{
// style settings for the background of the tile object
tile.style.background = ‘#FFF’;
// TODO set object tile innerHTML equal to the val parameter
// TODO check if the length of array memory_values equals 0
if()
{
// TODO call function push on array memory_values passing
// val as an argument
// TODO call function push on array memory_tile_ids passing
// tile.id as an argument
}
// TODO check if the length of array memory_values equals 1
else if()
{
// TODO call function push on array memory_values passing
// val as an argument
// TODO call function push on array memory_tile_ids passing
// tile.id as an argument
// TODO check if memory_values index 0 equals memory_values index 1
if()
{
// TODO update the value of variable tiles_flipped to be increased by 2
// TODO clear array memory_values
// TODO clear array memory_tile_ids
// TODO check to see if the whole board is cleared by
// comparing the number of tiles_flipped being equal to
// the length of array memory_array
if()
{
// TODO using an alert dialog box inform the user that
// the board has been cleared and a new board is
// being generated
// TODO update object document, id ‘memory_board’, innerHTML
// to be equal to “”
// TODO call function newBoard
}
}
// otherwise
else
{
// TODO write function flip2Back so it flips the turned over tiles to
// no longer be visible
function
{
// Flip the 2 tiles back over
// TODO declare variable tile_1 set equal to object document,
// element id memory_tile_ids, index 0
// TODO declare variable tile_1 set equal to object document,
// element id memory_tile_ids, index 1
// style settings for tile_1
tile_1.style.background = ‘pink’;
tile_1.innerHTML = “”;
// style settings for tile_2
tile_2.style.background = ‘pink’;
tile_2.innerHTML = “”;
// TODO clear array memory_values
// TODO clear array memory_tile_ids
}
// TODO call function setTimeout passing arguments function flip2Back
// and the value 700
}
}
}
}
</script>
</head>
<body>
<!– create a div with id attribute equal to “memory_board” –>
<!– in the script tag
// TODO call function newBoard
</body>
</html>
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