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Add a hidden, read-only , hidden data property to any object... |
Syntax
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obj.addConst(namekey, value); |
Parameters
Parameter | Type | Mandatory | Description | Util.js version |
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namekey | String | The name (key) of the property. | 1.0 | |
value | Variant | The value associated with the property. | 1.0 |
Return value
If a non-configurable property of the same name is already defined, an error will be thrown.Value | Type | Notes | API Version |
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<object> | Object | If successful, the addProp() method returns the modified object. | 1.0 |
<error> | TypeError | An error will be thrown if:
| 1.0 |
Example
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myObj = {}; myObj.addConst("foo", "bar"); myObj.foo; // "bar" myObj.foo = "moo"; // does nothing, foo is read-only myObj.foo // "bar" for (i in myObj) { // does not iterate foo (foo is hidden) } |
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Availability
Requires:
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ContentsJump to:
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Property DefinitionsTopics:
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