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compile and link

2015-06-08 21:28 579 查看
<!DOCTYPE html>
<html data-ng-app="myApp">
<head lang="en">
<meta charset="UTF-8">
<title></title>
</head>
<body data-ng-controller="myAppCtrl">
<data-compile-and-link>{{name}}</data-compile-and-link>
<level-one>
<level-two>
<level-three>
Hello
</level-three>
</level-two>
</level-one>
</body>
<script src="angular.js"></script>
<script>
var myApp = angular.module('myApp', []);
myApp.controller('myAppCtrl', function ($scope) {
$scope.name = 'Jackey';
});

//
/* myApp.directive('compileAndLink', function () {
return {
restrict: 'E',
controller: function ($scope, $element) {
console.log('controlle:begin...');
},
compile: function (cElement, cAttrs) {
console.log('compile:begin...');
return {
pre: function (preScope, preElement, preAttrs) {
console.log('pre link:begin...');
},
post: function (postScope, postElement, postAttrs) {
console.log('post link:begin...');
}
};
},
link: function (linkScope, linkEelemnt, linkAttr) {
console.log('link begin...');
}
};
});*/

//result:
//            compile:begin...
//            index.html:21 controlle:begin...
//            index.html:27 pre link:begin...
//            index.html:30 post link:begin...
//我们可以知道：directvie的先后顺序是compile - controller - pre - post 。。。
//link没有执行，是因为link就是compile里面的post link了。

function createDirective(name) {
return function () {
return {
restrict: 'E',
compile: function (tElem, tAttrs) {
console.log(name + ': compile');
return {
pre: function (scope, iElem, iAttrs) {
console.log(name + ': pre link');
},
post: function (scope, iElem, iAttrs) {
console.log(name + ': post link');
}
}
}
}
}
}
//    myApp.directive('levelOne', createDirective('levelOne'));
//    myApp.directive('levelTwo', createDirective('levelTwo'));
//    myApp.directive('levelThree', createDirective('levelThree'));

//result:
//    levelOne: compile
//    levelTwo: compile
//    levelThree: compile
//    levelOne: pre link
//    levelTwo: pre link
//    levelThree: pre link
//    levelThree: post link
//    levelTwo: post link
//    levelOne: post link

function createDirective(name){
return function(){
return {
restrict: 'E',
compile: function(tElem, tAttrs){
console.log(name + ': compile => ' + tElem.html());
return {
pre: function(scope, iElem, iAttrs){
console.log(name + ': pre link => ' + iElem.html());
},
post: function(scope, iElem, iAttrs){
console.log(name + ': post link => ' + iElem.html());
}
}
}
}
}
}
myApp.directive('levelOne', createDirective('levelOne'));
myApp.directive('levelTwo', createDirective('levelTwo'));
myApp.directive('levelThree', createDirective('levelThree'));

//    levelOne: compile =>
//    <level-two>
//    <level-three>
//    Hello
//    </level-three>
//    </level-two>
//
//    levelTwo: compile =>
//    <level-three>
//    Hello
//    </level-three>
//
//    levelThree: compile =>
//    Hello
//
//    levelOne: pre link =>
//    <level-two>
//    <level-three>
//    Hello
//    </level-three>
//    </level-two>
//
//    levelTwo: pre link =>
//    <level-three>
//    Hello
//    </level-three>
//
//    levelThree: pre link =>
//    Hello
//
//    levelThree: post link =>
//    Hello
//
//    levelTwo: post link =>
//    <level-three>
//    Hello
//    </level-three>
//
//    levelOne: post link =>
//    <level-two>
//    <level-three>
//    Hello
//    </level-three>
//    </level-two>

//留意post link是一个反向的解析
</script>

</html>
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