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blockly > FieldDropdown > (constructor)
FieldDropdown.(constructor)
Constructs a new instance of the FieldDropdown class
Signature:
constructor(menuGenerator: MenuGenerator, validator?: FieldDropdownValidator, config?: FieldDropdownConfig);
Parameters
| Parameter |
Type |
Description |
| menuGenerator |
MenuGenerator |
A non-empty array of options for a dropdown list, or a function which generates these options. Also accepts Field.SKIP_SETUP if you wish to skip setup (only used by subclasses that want to handle configuration and setting the field value after their own constructors have run). |
| validator |
FieldDropdownValidator |
(Optional) A function that is called to validate changes to the field's value. Takes in a language-neutral dropdown option & returns a validated language-neutral dropdown option, or null to abort the change. |
| config |
FieldDropdownConfig |
(Optional) A map of options used to configure the field. See the [field creation documentation]https://developers.google.com/blockly/guides/create-custom-blocks/fields/built-in-fields/dropdown#creation for a list of properties this parameter supports. |
Exceptions
{TypeError} If menuGenerator options are incorrectly structured.
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Last updated 2024-09-18 UTC.
[{
"type": "thumb-down",
"id": "missingTheInformationINeed",
"label":"Missing the information I need"
},{
"type": "thumb-down",
"id": "tooComplicatedTooManySteps",
"label":"Too complicated / too many steps"
},{
"type": "thumb-down",
"id": "outOfDate",
"label":"Out of date"
},{
"type": "thumb-down",
"id": "samplesCodeIssue",
"label":"Samples / code issue"
},{
"type": "thumb-down",
"id": "otherDown",
"label":"Other"
}]
[{
"type": "thumb-up",
"id": "easyToUnderstand",
"label":"Easy to understand"
},{
"type": "thumb-up",
"id": "solvedMyProblem",
"label":"Solved my problem"
},{
"type": "thumb-up",
"id": "otherUp",
"label":"Other"
}]
{"lastModified": "Last updated 2024-09-18 UTC."}
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-09-18 UTC."]]
