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blockly > Events > VarRename > (constructor)
Events.VarRename.(constructor)
Constructs a new instance of the VarRename class
Signature:
constructor(opt_variable?: IVariableModel<IVariableState>, newName?: string);
Parameters
| Parameter |
Type |
Description |
| opt_variable |
IVariableModel<IVariableState> |
(Optional) The renamed variable. Undefined for a blank event. |
| newName |
string |
(Optional) The new name the variable will be changed to. |
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Last updated 2025-05-16 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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-05-16 UTC."],[[["\u003cp\u003eThe \u003ccode\u003eEvents.VarRename\u003c/code\u003e class constructor creates a new instance of the \u003ccode\u003eVarRename\u003c/code\u003e class, signifying a variable rename event within Blockly applications.\u003c/p\u003e\n"],["\u003cp\u003eThis constructor optionally accepts the \u003ccode\u003eVariableModel\u003c/code\u003e object of the renamed variable and the variable's new name as parameters.\u003c/p\u003e\n"],["\u003cp\u003eThese parameters, \u003ccode\u003eopt_variable\u003c/code\u003e and \u003ccode\u003enewName\u003c/code\u003e, help in defining the specifics of the variable rename event.\u003c/p\u003e\n"]]],["The `VarRename` class constructor creates a new instance for renaming a variable. It accepts two optional parameters: `opt_variable`, a `VariableModel` representing the variable being renamed, and `newName`, a string specifying the variable's new name. If `opt_variable` is undefined, it indicates a blank event. The class facilitates the process of tracking and applying variable name changes within the system.\n"],null,["[blockly](./blockly.md) \\\u003e [Events](./blockly.events_namespace.md) \\\u003e [VarRename](./blockly.events_namespace.varrename_class.md) \\\u003e [(constructor)](./blockly.events_namespace.varrename_class._constructor__1_constructor.md)\n\nEvents.VarRename.(constructor)\n------------------------------\n\nConstructs a new instance of the `VarRename` class\n\n**Signature:** \n\n constructor(opt_variable?: IVariableModel\u003cIVariableState\u003e, newName?: string);\n\nParameters\n----------\n\n| Parameter | Type | Description |\n|--------------|--------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------|\n| opt_variable | [IVariableModel](./blockly.ivariablemodel_interface.md)\\\u003c[IVariableState](./blockly.ivariablestate_interface.md)\\\u003e | *(Optional)* The renamed variable. Undefined for a blank event. |\n| newName | string | *(Optional)* The new name the variable will be changed to. |"]]
