A browser for executing HTML code received from a computer network having a computer. The browser comprises code programmed to analyze HTML code and identify scalar properties and expressions, each expression defining the value of a dynamic property and being a function of the scalar property; code programmed to map a dependent/dependency relationship between the expression and the scalar property; and code programmed to notice a change in a value of the scalar property and to execute the expression in response to the change in value of the scalar property.
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