Angular2 Call Function When the Input Changes
<p>Child component:</p>

<pre><code>export class Child {
    @Input() public value: string;
    public childFunction(){...}
}
</code></pre>

<p>Parent component: </p>

<pre><code>export class Parent {
    public value2: string;
    function1(){ value2 = "a" }
    function2(){ value2 = "b" }
}
</code></pre>

<p>Parent view: </p>

<pre><code>&lt;child [value]="value2"&gt;
</code></pre>

<p>Is there any way to call childFunction() every time the value2 is changed in this structure? </p>