Question: switch (buttonValue ) { case del: calcValue = um; break; case bksp: calcValue = eraseChar (calcValue); break; case enter: calcValue += = +

switch (buttonValue ) { case "del": calcValue = um; break; case

switch (buttonValue ) { case "del": calcValue = um; break; case "bksp": calcValue = eraseChar (calcValue); break; case "enter": calcValue += " = " + evalEg(calcValue, calcDecimal ) + " "; break; case "prev": calcValue += IstEq(calcValue ); break; default : calcValue += buttonValue; break

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