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Added examples for using more advanced Lucee loops #1726

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b4c861e
Added examples for using more advanced Lucee loops
tom-clik Dec 15, 2025
30dcfb8
Error on loop syntax
tom-clik Dec 15, 2025
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4 changes: 2 additions & 2 deletions data/en/cfloop.json
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Original file line number Diff line number Diff line change
Expand Up @@ -51,7 +51,7 @@
{
"title": "Loop Over an Array (Script Syntax)",
"description": "Array Loop",
"code": "myArray = [\"a\", \"b\", \"c\"];\n// For Loop By index for CF9.0.0 and lower \nfor (i = 1; i <= arrayLen(myArray); i++) {\n writeOutput(myArray[i]);\n}\n// By For In CF9.0.1+ \nfor (currentIndex in myArray) {\n writeOutput(currentIndex);\n}\n// By arrayEach() member function CF11+\nmyArray.each(function(element, index) {\n writeOutput(element & \" : \" & index);\n});",
"code": "myArray = [\"a\", \"b\", \"c\"];\n// For Loop By index for CF9.0.0 and lower \nfor (i = 1; i <= arrayLen(myArray); i++) {\n writeOutput(myArray[i]);\n}\n// By For In CF9.0.1+ \nfor (currentIndex in myArray) {\n writeOutput(currentIndex);\n}\n// By arrayEach() member function CF11+\nmyArray.each(function(element, index) {\n writeOutput(element & \" : \" & index);\n});\n// loop with index Lucee5+\nloop collection=cars index=\"i\" value=\"value\" {\n writeOutput(i & \" : \" & value);\n}",
"result": ""
},
{
Expand All @@ -63,7 +63,7 @@
{
"title": "Loop over a Struct (Script Syntax)",
"description": "Struct Loop",
"code": "myStruct = {name: \"Tony\", state: \"Florida\"}; \r\n // By struct \r\n for (currentKey in myStruct) { \r\n writeOutput(\"<li>#currentKey# : #myStruct[currentKey]#</li>\"); \r\n } \r\n // By structEach() \r\n myStruct.each(function(key, value) { \r\n writeOutput(\"<li>#key# : #value#</li>\"); \r\n }); \r\n ",
"code": "myStruct = {name: \"Tony\", state: \"Florida\"}; \r\n // By struct \r\n for (currentKey in myStruct) { \r\n writeOutput(\"<li>#currentKey# : #myStruct[currentKey]#</li>\"); \r\n } \r\n // By structEach() \r\n myStruct.each(function(key, value) { \r\n writeOutput(\"<li>#key# : #value#</li>\"); \r\n }); \r\n // loop with index Lucee5+\nloop collection=myStruct key=\"key\" value=\"value\" {\n writeOutput(key & \" : \" & value);\n}",
"result": ""
},
{
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19 changes: 16 additions & 3 deletions guides/en/for.md
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Expand Up @@ -24,6 +24,13 @@ The above would output `321`

The above outputs `AB`

Using `loop` you can loop over the key and values (Lucee5+)

loop collection=st key="key" value="value" {
writeOutput(key & " " & value);
}


### For In Loop (over an array) CF9.0.1+

cars = ["Ford","Dodge"];
Expand All @@ -35,7 +42,13 @@ The above example would output `FordDodge`

For in support for native Java arrays was added in CF10+

### For In Loop (over a list) CF10+
Using `loop` you can track the index and the value (Lucee5+)

loop collection=cars index="i" value="value" {
writeOutput("#i#: #value#");
}

### For In Loop (over a list) CF10+ Lucee5+

fruits = "apple,orange,banana";
for (fruit in fruits) {
Expand All @@ -44,7 +57,7 @@ For in support for native Java arrays was added in CF10+

The above example would output `appleorangebanana`

### For In Loop (over a query) CF10+
### For In Loop (over a query) CF10+ Lucee5+

query = queryNew("name", "varchar", [
["apple"],
Expand All @@ -56,7 +69,7 @@ The above example would output `appleorangebanana`
writeOutput("#query.currentRow# - #row.name#<br>");
}

### Query Loop (with grouping) CF10+
### Query Loop (with grouping) CF10+ Lucee5+

q = queryNew("pk,fk,data", "integer,integer,varchar", [
[1, 10, "aa"],
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