You will find a complete list in the specification, in the expression chapter. Because the most "normal" operators are binary (see the definition at Wikipedia), they are not explicitly listed as such (like the unary and ternary operators). They are:

• Multiplicative Operators
  • The * Operator
  • The / Operator
  • The % Operator
• Additive Operators
  • The Addition operator (+)
  • The Subtraction Operator (-)
• Bitwise Shift Operators
  • The Left Shift Operator (<<)
  • The Signed Right Shift Operator (>>)
  • The Unsigned Right Shift Operator (>>>)
• Relational Operators
  • The Less-than Operator (<)
  • The Greater-than Operator (>)
  • The Less-than-or-equal Operator (<=)
  • The Greater-than-or-equal Operator (>=)
  • The instanceof operator
  • The in operator
• Equality Operators
  • The Equals Operator (==)
  • The Does-not-equals Operator (!=)
  • The Strict Equals Operator (===)
  • The Strict Does-not-equal Operator (!==)
• Binary Bitwise Operators (&, ^, |)
• Binary Logical Operators (&&, ||)

Technically speaking, also the assignment and comma operators are binary.