CFSCRIPT

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CFSCRIPT
2 types of modern scripting for the web
Tag based
Script based
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CFSCRIPT

• Block tags
• Whatever is inside will be executes (evaluation
  zone)
• No tags allowed
• Each expression must be terminated by a
  semi-colon ()
• Assignment is simply variablenamevalue

ltCFSCRIPTgt Name"Michael" Age29 DateNow()
Sum117 AgeNextAge1 lt/CFSCRIPTgt
String Number Function Operation Expression
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CFSCRIPT

• 2 forms of comments
• Comments needed as the code will be more
  obfuscated

ltCFSCRIPTgt // This is a one line comment. Use
this to comment on a code snippet / This is
a multi-line comment Use this when writing docs
at the top of a CFACRIPT block / lt/CFSCRIPTgt
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CFSCRIPT

• Execution functions (see handout) DO NOT NEED to
  be assigned to a variable, especially in CFSCRIPT

ltCFSCRIPTgt // This will clear the session
structure StructClear(session) // This will
disconnect the data sources cfusion_dbconnection
s_flush() // Reset a query cell
QuerySetCell(myquery, 'name', 'Michael',
1) lt/CFSCRIPTgt
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CFSCRIPT

• Pay attention to standard Reserve Words
• New Reserve Words

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CFSCRIPT If
ltCFSCRIPTgt // Standard IF statment IF (score GT
1) result "positive" // If statment with
multiple parts in the if IF (score GT 1)
result "positive" totalscorescore1 lt
/CFSCRIPTgt
Statment
code block - seen as one complete unit
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CFSCRIPT IF - Else
ltCFSCRIPTgt // If with an Else IF (score GT
1) result "positive" ELSE result
"negative" // If, Else, Else If IF (score GT
1) result "positive" ELSE IF (score EQ
0) result"null" ELSE result
"negative" lt/CFSCRIPTgt
Sub IF statment
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CFSCRIPT Switch
ltCFSCRIPTgt switch(name) case
"John" maletrue break case
"Mary" malefalse break default
foundfalse break //end
switch lt/CFSCRIPTgt
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CFSCRIPT For Loop

• For loop
• FOR (init-expr test-expr final-expr)
  statement
• init-expr and final-expr can be
• single assignment expression, for example, x5
  or looploop1
• any ColdFusion expression, for example,
  SetVariable("a",a1)
• empty
• The test-expr can be
• any ColdFusion expression, for example, A LT 5,
  loop LE x, or Y EQ "not found" AND loop LT
• empty

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CFSCRIPT For Loop
ltCFSCRIPTgt // Loop from 1 to 10 for(Loop11
Loop1 LT 10 Loop1 Loop1 1) scorescoreloop
1 // Loop from 1 to 10 for(Loop11 Loop1
Loop1 1) scorescoreloop1 IF (Loop1
EQ 10) break lt/CFSCRIPTgt
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CFSCRIPT While Loop
ltCFSCRIPTgt // While expression is true a
ArrayNew(1) while (loop1 LT 10) aloop1
loop1 5 loop1 loop1 1 // While
expression is true a ArrayNew(1) while
(loop1 LT 10) IF (loop1 mod 2 EQ
0) continue loop1 loop1
1 lt/CFSCRIPTgt
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CFSCRIPT Do-While Loop
ltCFSCRIPTgt // Multiline do-while loop // Tests
AFTER code is run a ArrayNew(1) do al
oop1 loop1 5 loop1 loop1
1 while (loop1 LT 10) lt/CFSCRIPTgt
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CFSCRIPT For-In Loop
Special loop for dealing with collections (I.e.
structures) for (variable in collection)
statement
ltCFSCRIPTgt for (x in Session) WriteOutPut(Sess
ionxltbrgt) lt/CFSCRIPTgt