json.indexOf: Difference between revisions
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(New page: {{MacroFunction |name=json.indexOf |version=1.3b53 |description= Returns the index of the first occurrence of a value in the JSON Array. If the value does not exist in the [[JSON Array...) |
Verisimilar (talk | contribs) m (Minor formatting changes, corrected examples, added see also.) |
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| Line 3: | Line 3: | ||
|version=1.3b53 | |version=1.3b53 | ||
|description= | |description= | ||
Returns the index of the first occurrence of a value in the [[JSON Array]]. If the value does not | Returns the index of the first occurrence of a value in the [[JSON Array]]. If the value does not exist in the [[JSON Array]] then {{code|-1}} is returned. All [[JSON Array]] indexes start at {{code|0}}. | ||
exist in the [[JSON Array]] then {{code|-1}} is returned. All [[JSON Array]] indexes start at {{code|0}}. | |||
|usage= | |usage= | ||
<source lang="mtmacro" line> | <source lang="mtmacro" line> | ||
json.indexOf(array, value) | |||
</source> | </source> | ||
<source lang="mtmacro" line> | <source lang="mtmacro" line> | ||
json.indexOf(array, value, start) | |||
</source> | </source> | ||
'''Parameters''' | '''Parameters''' | ||
{{param|array|The [[JSON Array]] to search.}} | |||
{{param|value|The value to find the index of in the [[JSON Array]].}} | |||
{{param|start|The index to start searching from, if not specified it defaults to {{code|0}}.}} | |||
|examples= | |||
Find the index of the first occurrence of {{code|1}}: | |||
<source lang="mtmacro" line> | |||
[r: json.indexOf("[1,2,3,1,1,3]", 1)] | |||
</source> | |||
Returns: {{code|0}} | |||
Find the index of the first occurrence of {{code|1}}, starting at index {{code|1}}: | |||
<source lang="mtmacro" line> | |||
[r: json.count("[1,2,3,1,1,3]", 1, 1)] | |||
</source> | |||
Returns: {{code|3}} | |||
| | Find the index of the first occurrence of {{code|2}}, starting at index {{code|2}}: | ||
<source lang="mtmacro" line> | <source lang="mtmacro" line> | ||
[r: json. | [r: json.count("[1,2,3,1,1,3]", 2, 2)] | ||
</source> | </source> | ||
Returns: {{code|-1}} | |||
|also= | |||
{{func|json.count}} | |||
}} | }} | ||
[[Category:JSON Function]] | [[Category:JSON Function]] | ||
Revision as of 19:28, 31 March 2009
json.indexOf() Function
• Introduced in version 1.3b53
Returns the index of the first occurrence of a value in the JSON Array. If the value does not exist in the JSON Array then
-1 is returned. All JSON Array indexes start at 0.Usage
json.indexOf(array, value)json.indexOf(array, value, start)Parameters
array- The JSON Array to search.value- The value to find the index of in the JSON Array.start- The index to start searching from, if not specified it defaults to0.
Examples
Find the index of the first occurrence of
Returns:
1:
[r: json.indexOf("[1,2,3,1,1,3]", 1)]Returns: 0
Find the index of the first occurrence of 1, starting at index 1:
[r: json.count("[1,2,3,1,1,3]", 1, 1)]Returns: 3
Find the index of the first occurrence of 2, starting at index 2:
[r: json.count("[1,2,3,1,1,3]", 2, 2)]-1