Declarative Data Binding and Observables
Declarative data binding and observables are a powerful combination. If you use observables with data binding then you can update the contents of an HTML document automatically whenever you change the underlying JavaScript objects.
For example, the HTML page in Listing 3.7 contains a SPAN and a BUTTON element. The page displays the number of times the button has been clicked (see Figure 3.6).
FIGURE 3.6 Displaying a click count
LISTING 3.7 Using Data Binding with an Observable (dataBindingObservables\dataBindingObservables.html)
<!DOCTYPE html><html><head> <meta charset ...
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