Now find the complete example of two-way binding step-by-step. If two-way binding is taking place at HTML element level such as in input box or select box then we will use ngModel for target name as. When two-way binding is between components at component element level and input property name is xyz and output property name is xyzChange then the target in two-way binding will be written as. It provides the required name pattern of target as ngModel in property binding and ngModelChange in event binding. So here the role of NgModel directive comes into the picture to work as bridge that enables two-way binding to HTML elements. But in HTML element there are in-built names as target in binding such as value in property binding and input in event binding. In component property binding and custom event binding we create our own property name and event name as target in binding. So if we have a property xyz then event name should be xyzChange. Event name should be property adding Change keyword as suffix. Two-way binding uses a specific name pattern. Two-way binding works in both direction setting the value and fetching the value. Property binding uses the syntax as bracket or bind- and event binding uses the syntax as parenthesis () or on- and these bindings are considered as one-way binding. Two-way binding uses the syntax of property binding and event binding together. Two-way binding uses the syntax as or bindon- keyword. We can achieve it in component element and HTML element both.
MESTRENOVA 12 ADD TEXT BOX UPDATE
Using two-way binding, we can display a data property as well as update that property when user does changes. This page will walk through Angular two-way data binding and NgModel with examples.