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Js Implementation of big turntable lottery game instances

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Js Implementation of big turntable lottery game instances

The example in this article describes how js implements a big turntable lottery game. Share it with you for your reference. The specific implementation method is as follows:

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<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN"

Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd>

<Html xmlns = "http://www.w3.org/1999/xhtml">

<Head>

<Title> js lottery </title>

<Style type = "text/css">

Td {width: 50px; height: 50px; border: 3px solid # ccc; text-align: center; vertical-align: middle}

</Style>

</Head>

<Body>

<Table id = "tb">

<Tr>

<Td> 1 </td> <td> 2 </td> <td> 3 </td> <td> 4 </td> <td> 5 </td>

</Tr>

<Tr>

<Td> 16 </td> <td> 6 </td>

</Tr>

<Tr>

<Td> 15 </td> <td> 7 </td>

</Tr>

<Tr>

<Td> 14 </td> <td> 8 </td>

</Tr>

<Tr>

<Td> 13 </td> <td> 12 </td> <td> 11 </td> <td> 10 </td> <td> 9 </td>

</Tr>

</Table>

<P> </p>

Enter one of the integers from 1 to 16, <input id = "txtnum" value = "12" type = "text"/> <input type = "button" value = "start" onclick = "StartGame "() "/>

<Script type = "text/javascript">

/*

* Delete spaces between the left and right sides.

*/

Function Trim (str ){

Return str. replace (/(^ \ s *) | (\ s * $)/g ,"");

}

/*

* Define an array

*/

Function GetSide (m, n ){

// Initialize the Array

Var arr = [];

For (var I = 0; I <m; I ++ ){

Arr. push ([]);

For (var j = 0; j <n; j ++ ){

Arr [I] [j] = I * n + j;

}

}

// Obtain the outermost circle of the array

Var resultArr = [];

Var tempX = 0,

TempY = 0,

Direction = "Along ",

Count = 0;

While (tempX> = 0 & tempX <n & tempY> = 0 & tempY <m & count <m * n)

{

Count ++;

ResultArr. push ([tempY, tempX]);

If (direction = "Along "){

If (tempX = N-1)

TempY ++;

Else

TempX ++;

If (tempX = n-1 & tempY = m-1)

Direction = "Inverse"

}

Else {

If (tempX = 0)

TempY --;

Else

TempX --;

If (tempX = 0 & tempY = 0)

Break;

}

}

Return resultArr;

}

Var index = 0, // the current position in the bright area

PrevIndex = 0, // the previous position

Speed = 300, // initial Speed

Time, // define the object

Arr = GetSide (5, 5), // initialize the Array

EndIndex = 0, // determines where the speed slows down

Tb = document. getElementById ("tb"), // get the tb object

Cycle = 0, // Number of rotated circles

EndCycle = 0, // calculate the number of circles

Flag = false, // indicates the stop rotation.

Quick = 0; // Acceleration

Function StartGame (){

Cycle = 0;

Flag = false;

EndIndex = Math. floor (Math. random () * 16 );

// EndCycle = Math. floor (Math. random () * 4 );

EndCycle = 1;

Time = setInterval (Star, Speed );

}

Function Star (num ){

// Variable Speed

If (flag = false ){

// Start acceleration in five cells

If (quick = 5 ){

ClearInterval (Time );

Speed = 50;

Time = setInterval (Star, Speed );

}

// Run N laps to slow down

If (cycle = EndCycle + 1 & index = EndIndex ){

ClearInterval (Time );

Speed = 300;

Flag = true; // trigger end

Time = setInterval (Star, Speed );

}

}

If (index> = arr. length ){

Index = 0;

Cycle ++;

}

// Stop turning and select the number

If (flag = true & index = parseInt (Trim (document. getElementById ("txtnum"). value)-1 ){

Quick = 0;

ClearInterval (Time );

}

Tb. rows [arr [index] [0]. cells [arr [index] [1]. style. border = "3px solid red ";

If (index> 0)

PrevIndex = index-1;

Else {

PrevIndex = arr. length-1;

}

Tb. rows [arr [prevIndex] [0]. cells [arr [prevIndex] [1]. style. border = "3px solid # ccc ";

Index ++;

Quick ++;

}

/*

Window. onload = function (){

Time = setInterval (Star, Speed );

}

*/

</Script>

</Body>

</Html>

I hope this article will help you design javascript programs.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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