Here is a simple example. You should be able to paste this into a new, empty page in Wappler and hopefully see what I mean. I’ve added a select which will set the first variable to a number. Clicking the button will then apply focus according to the selection made. You could have a thousand fields and no extra code would be required (except adding numbers to the select control, as used in this example).
<!doctype html>
<html><head>
<base href="/">
<meta charset="UTF-8">
<title>Untitled Document</title>
<script src="dmxAppConnect/dmxAppConnect.js"></script>
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<script src="dmxAppConnect/dmxBootstrap4Navigation/dmxBootstrap4Navigation.js" defer=""></script>
</head>
<body is="dmx-app" id="test">
<dmx-value id="var1" dmx-bind:value="2"></dmx-value>
<dmx-value id="var2" dmx-bind:value=""myform.input" + var1.value + ".focus()""></dmx-value>
<main>
<div class="container">
<div class="row">
<div class="col">
<div class="container">
<form id="myform">
<div class="row">
<div class="col-12 col-md-8 col-lg-7 col-xl-5 text-left">
<div class="row">
<div class="col">
<h4>Dynamic, Dynamic Event</h4>
<p class="text-h3">Event to run onclick is stored in a variable, which in turn is dependent on another variable.<br></p>
</div>
</div>
<div class="row">
<div class="mt-4 col-3">
<select id="select1" class="form-control" dmx-on:updated="var1.setValue(value)">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
</div>
</div>
<div class="row">
<div class="col mt-4">
<input type="text" id="input1" name="input1" class="form-control" placeholder="field 1">
</div>
</div>
<div class="row">
<div class="col mt-4">
<input type="text" id="input2" name="input2" class="form-control" placeholder="field 2">
</div>
</div>
<div class="row mt-4">
<div class="col">
<input type="text" id="input3" name="input3" class="form-control mb-4" placeholder="field 3">
<button class="btn btn-danger" dmx-on:click="var2.value">select field</button>
<p>var1: <b>{{var1.value}}</b></p>
<p>var2: <b>{{var2.value}}</b></p>
</div>
</div>
</div>
</div>
</form>
</div>
</div>
</div>
</div>
</main>
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