Unplug the refrigerator. Mark the wires so you know where they go into the switch. Take out the switch and tube. Go to an appliance parts store with the switch and tube and the model and serial number of the refrigerator and get a new part. Do not kink, bend, or fold the new tube as you carry it home or install it.
A string variable is an array of characters. char a[10]; Which can hold any string value , that has a lenght less than or equal to the size of the character array. Whereas a string constant , is a particular string .
An object is an instance of a user defined data type. In other languages (e.g. Java), there's a dichotomy between primitive data types (int, char, etc). These are data types that are built right into the language. JavaScript is a little different because everything is pretty much an object.