json.indexOf: Difference between revisions
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Verisimilar (talk | contribs) m (Minor formatting changes, corrected examples, added see also.) |
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Find the index of the first occurrence of {{code|1}}, starting at index {{code|1}}: | Find the index of the first occurrence of {{code|1}}, starting at index {{code|1}}: | ||
<source lang="mtmacro" line> | <source lang="mtmacro" line> | ||
[r: json. | [r: json.indexOf("[1,2,3,1,1,3]", 1, 1)] | ||
</source> | </source> | ||
Returns: {{code|3}} | Returns: {{code|3}} | ||
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Find the index of the first occurrence of {{code|2}}, starting at index {{code|2}}: | 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.indexOf("[1,2,3,1,1,3]", 2, 2)] | ||
</source> | </source> | ||
Returns: {{code|-1}} | Returns: {{code|-1}} | ||
Revision as of 03:28, 9 January 2020
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.indexOf("[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.indexOf("[1,2,3,1,1,3]", 2, 2)]-1