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Explain string interpolation and property binding in Angular.

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String interpolation and property binding are parts of data-binding in Angular.

Data-binding is a feature in angular, which provides a way to communicate between the component(Model) and its view(HTML template).

Data-binding can be done in two ways, one-way binding and two-way binding.

In Angular, data from the component can be inserted inside the HTML template. In one-way binding, any changes in the component will directly reflect inside the HTML template but, vice-versa is not possible. Whereas, it is possible in two-way binding.

String interpolation and property binding allow only one-way data binding.

String interpolation uses the double curly braces {{ }} to display data from the component. Angular automatically runs the expression written inside the curly braces, for example, {{ 2 + 2 }} will be evaluated by Angular and the output 4, will be displayed inside the HTML template. Using property binding, we can bind the DOM properties of an HTML element to a component's property. Property binding uses the square brackets [ ] syntax.

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