通过MVC实现过程(一)了解了mvc的实现过程，这次通过上次的学习，来模仿angularjs部分形式：
例子
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>MVC例子</title>
<meta name="description" content="">
<meta name="keywords" content="">
<link href="" rel="stylesheet">
</head>
<body>
<div>时钟</div>
<div controller="clock">
<span bind="hour"></span> :
<span bind="minutes"></span> :
<span bind="seconds"></span>
</div>
<br/>
<div>双向绑定</div>
<div controller="myCtrl" init="{numb:2,num:'nihao'}">
Input : <input type="text" bind="numb">
<br/>Span : <span bind="numb"></span>
</div>
<script type="text/javascript">
var app = (function() {
var Model = function(value) {
this._v = value;
this._listeners = [];
}
Model.prototype.set = function(value) {
var self = this;
self._v = value;
setTimeout(function() {
self._listeners.forEach(function(listener) {
listener.call(this, value);
})
})
}
Model.prototype.watch = function(func) {
this._listeners.push(func);
}
Model.prototype.bind = function(node) {
var self = this;
this.watch(function(value) {
if (node.tagName.toUpperCase() == "INPUT" && !self.inputEvent) {
node.addEventListener("keyup", function() {
var _v = this.value;
if (_v != value) {
self.set(_v);
}
self.inputEvent = 1;
})
node.value = value;
} else {
node.innerHTML = value;
}
})
}
function controller(controllername, callback) {
var models = {},
search = typeof controllername == "string" ? "[controller=" + controllername + "]" : "[controller]",
controller = document.querySelector(search),
init = eval("(" + controller.getAttribute("init") + ")"),
$scope = {};
if (!controller) return;
var views = Array.prototype.slice.call(controller.querySelectorAll("[bind]"), 0);
views.forEach(function(view) {
var modelname = view.getAttribute("bind");
(models[modelname] = models[modelname] || new Model()).bind(view);
$scope = createVisitors($scope, models[modelname], modelname);
});
for (var index in init) {
$scope[index] = init[index];
}
callback.call(this, $scope);
}
function createVisitors($scope, model, property) {
$scope.__defineSetter__(property, function(value) {
model.set(value);
})
return $scope;
}
return {
controller: controller
}
})();
app.controller("myCtrl", function($scope) {
//code ...
});
app.controller("clock", function($scope) {
function setTime() {
var date = new Date();
$scope.hour = date.getHours();
$scope.minutes = date.getMinutes();
$scope.seconds = date.getSeconds();
setTimeout(setTime, 1000);
}
setTime();
})
</script>
</body>
</html>
