Glossary Term
handler.has()
2 tags
1 category
The handler.has() method is a trap for the [[HasProperty]] object internal method, which is used by operations such as the in operator.
Return value: The has() method must return a Boolean indicating whether or not the property exists. Other values are coerced to booleans.
Parameters: The following parameters are passed to has() method. this is bound to the handler.
Parameters: target The target object. property A string or Symbol representing the property name.
Syntax example: new Proxy(target, {
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