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Javascript: Multiple Code Blocks

Join Date: Jul 2006
Posts: 73
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DavidB DavidB is offline Offline
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Javascript: Multiple Code Blocks

  #1  
Dec 25th, 2007
Hi, folks.

I have written some pretty complicated programs in Javascript (in terms of the code itself), but I haven’t experimented much with the nuts-and-bolts of Javascript. In particular, I have written all my programs as single blocks of code. For example, I have written several programs to solve for the eigenvalues and eigenvectors of matrices. One page solves for a 3 x 3 matrix, one for a 4 x 4 matrix, one for a 5 x 5 matrix, etc. Each javascript program is on its own page and takes the following form:

<script language="javascript" type="text/javascript">
<!--Define JavaScript function.-->

function OneBigProgram(dataForm){

// Code to input the matrix elements for the specifically-sized matrix

 . . .

// Code to calculate the eigenvalues and eigenvectors
// BIG BLOCK OF CODE
. . .

// Code to output the results for the specifically-sized matrix
 . . . 

// end of JavaScript-->
</script>

The algorithm for actually calculating the eigenvalues and eigenvectors does not change depending upon matrix size, it is included in the BIG BLOCK OF CODE.

What I am hoping to do now is turn the code block for the BIG BLOCK OF CODE into an external file, and have the several programs refer to it. That way, I won't have six programs include the same big block of code; they can all refer to the same external file--saving space on the server. For example:

<script language="javascript" type="text/javascript">
<!--Define JavaScript function.-->

function A_Smaller_Program_Input(dataForm){

// Code to input the matrix elements for the specifically-sized matrix

 . . .

// end of JavaScript-->
</script>

<script language="javascript" type="text/javascript" src="RoutineforEigenvalues.js">
</script>

function A_Smaller_Program_Output(dataForm){

// Code to output the results for the specifically-sized matrix

 . . .

// end of JavaScript-->
</script>

Is what I want to do possible? How seamlessly does Javascript transmit data between seemingly independent code blocks?
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