I have my html like this.

```
<div id="series1">
    <div class="col-md-6">
        <label for="Mark">Mark</label>
        <input type="text" id="mark" class="shortTextbox" (blur)="signalSelected('mark')" />
    </div>
</div>

```

I want to get the value of mark value entered in the text box. This html code repeats for me on a button click. Every time the button is clicked id changes to series2 and series3 and so on.

Currently in typescript file I am taking value like

```
var val = (<HTMLInputElement>document.getElementById(selection)).value

```

But this won't give me the value selected for the respective series id. Can you please provide how to get the mark value based on id(series1, series2)...