Angularjs code not work when content is loaded from other page using ajax

• When you set innerHTML, script inside the html won't be executed. You need to use eval() or executeScript() or appendChild() may be other to execute the script. (below used setInnerHtml solution is taken from other answer)
• You need to bootstrap the angular app when you add it dynamically

main-page.php

<div id="form-section">
    <button id="load_form">Load Form</button>    
</div>
<script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.6/angular.min.js"></script>
<script type="text/javascript">


var setInnerHtml = function(elm, html) {
  elm.innerHTML = html;
  var scripts = elm.getElementsByTagName("script");
  // If we don't clone the results then "scripts"
  // will actually update live as we insert the new
  // tags, and we'll get caught in an endless loop
  var scriptsClone = [];
  for (var i = 0; i < scripts.length; i++) {
    scriptsClone.push(scripts[i]);
  }
  for (var i = 0; i < scriptsClone.length; i++) {
    var currentScript = scriptsClone[i];
    var s = document.createElement("script");
    // Copy all the attributes from the original script
    for (var j = 0; j < currentScript.attributes.length; j++) {
      var a = currentScript.attributes[j];
      s.setAttribute(a.name, a.value);
    }
    s.appendChild(document.createTextNode(currentScript.innerHTML));
    currentScript.parentNode.replaceChild(s, currentScript);
  }
}

$(document).on("click", "#load_form", function() {
   $.ajax({
       methond: 'GET',
       url: 'load-form.php',
       success: function(resp) {
          setInnerHtml($("#form-section")[0], resp);
       }
   });
});
</script>

load-form.php

<form ng-app="myApp" ng-controller="myCtrl" id="myApp">
{{ textOne }}
<input type="text" ng-model="textOne">
</form>

<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
   $scope.textOne = "John"; 
});
setTimeout(function() {
     angular.bootstrap(document.getElementById('myApp'), ['myApp'], 100);
// Closing }); was missing here    
});    
</script>