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What is the use of !$A.util.isUndefined() in Salesforce Lightning Component?
What is the use of !$A.util.isUndefined() in Salesforce Lightning Component?
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1 Reply
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<samp>component.get(String key)</samp> and <samp>component.set(String key, Object value)</samp> retrieves and assigns values associated with the specified key on the component. Keys are passed in as an expression, which represents an attribute value.
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