check if value exists in array + php code example

Example 1: how to check if object exists in javascript

if (typeof maybeObject != "undefined") {
   alert("GOT THERE");
}

Example 2: java check if element exists in array

// Convert to stream and test it
	boolean result = Arrays.stream(alphabet).anyMatch("A"::equals);
	if (result) {
		System.out.println("Hello A");
	}
Copy