index.html
<!DOCTYPE html>
<html ng-app="todoApp">
<head>
<title>To Do List</title>
<link href="skeleton.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.7/angular.min.js"></script>
<script src="app.js"></script>
</head>
<body ng-controller="todoController">
<div class="section hero">
<div class="container">
<div class="row">
<div class="three columns">
<li>
<button class="button button-primary" ng-click="btnClick(first)">Data 1</button>
</li>
</div>
<div class="nine columns">
<h4>{{dataText}}</h4>
</div>
</div>
</div>
</div>
</body>
</html>
app.js
var app = angular.module('todoApp', []);
app.controller('todoController', function ($scope) {
$scope.dataText = "";
$scope.btnClick = function (num){
dataText = "This is data from the " + num + " button."
};
});
When I click the button, I would expect the ng-click to initiate and call the function in the controller, but when I click nothing happens, the text on the screen doesn't change or anything. What am I doing wrong?
There is no variable named first in your html,
<li>
<button class="button button-primary" ng-click="btnClick(first)">Data 1</button>
</li>
Instead of that, Pass it as a string
<li>
<button class="button button-primary" ng-click="btnClick('first')>Data 1</button>
</li>
Also change the line like this,
$scope.btnClick = function (num){
$scope.dataText = "This is data from the " + num + " button."
};
Here is the working Plunker
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