yumoqing
1291f7fee3
When valueField/textField are not explicitly set in opts, the auto-select logic (line 1140) and nullable empty-option creation (lines 1144-1145) used data[0][undefined] which returned undefined, causing: - Single-option selects to show blank (auto-select failed) - nullable empty options to have undefined keys Now extracts vf/tf local variables with ||'value'/||'text' fallback at the top of build_options(), used consistently throughout.
14 lines
949 B
Markdown
14 lines
949 B
Markdown
# RegisterFunction
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## Control Functionality, Type (Regular or Container Control), and Parent Control
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- **Control Functionality**: Provides a global function registration and retrieval mechanism for managing and maintaining reusable functional functions. Functions are registered by name and can be dynamically retrieved later using their names.
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- **Type**: Regular control
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- **Parent Control**: None (native JavaScript class)
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## Initialization Parameters
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- No explicit initialization parameters. The constructor `constructor()` initializes an empty object `this.rfs = {}` to store registered functions.
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## Main Events
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- No DOM events. This control primarily provides the following methods as its interface:
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- `register(n, f)`: Registers function `f` with the name `n` into the internal storage object.
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- `get(n)`: Retrieves the function registered under name `n`. Returns `null` if no such function exists (handled after catching exceptions). |