AngularJS v1.2.x $消化()无限循环指令孤立的范围对象参数 [英] AngularJS v1.2.x $digest() infinite loop Directive isolated scope object param
本文介绍了AngularJS v1.2.x $消化()无限循环指令孤立的范围对象参数的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
简化问题的版本,浏览网页开发者控制台: http://plnkr.co /编辑/ 3wKmWz?p = preVIEW
未捕获的错误:[$ rootScope:infdig] 10 $摘要()迭代到达。中止!
观察家在过去的5次迭代解雇:
那么,为什么传递对象与一个孤立的范围指令导致无限$消化()循环?
//控制器
// AngularJS 1.2.x的无限摘要返回对象到指令时,因
$ scope.ctrlObjReturnFn =功能(){
返回{测试:真正};
}//视图
< DIV测试DIR破对象=ctrlObjReturnFn()>< / DIV//指令
app.directive('TESTDIR',函数(){
返回{
适用范围:{breakingObject:'='},
链接:功能(范围,元素,ATTRS){
element.html('印物镜:+ scope.breakingObject.toString());
}
}
});
解决方案
这是因为你在一个函数传递一个2路结合成指令,这是不是你应该做的事情,或者使用传递对象2路绑定:
范围:{breakingObject:'='},< DIV测试DIR破对象=ctrlObjReturnFn>< / DIV>$ scope.ctrlObjReturnFn = {测试:真正};
或使用1路绑定功能:
范围:{breakingObject:'和;' },< DIV测试DIR破对象=ctrlObjReturnFn()>< / DIV>$ scope.ctrlObjReturnFn =功能(){
返回{测试:真正};
}
见普拉克。
Simplified version of problem, view web dev console: http://plnkr.co/edit/3wKmWz?p=preview
Uncaught Error: [$rootScope:infdig] 10 $digest() iterations reached. Aborting!
Watchers fired in the last 5 iterations:
So why does passing an object into a directive with an isolated scope cause an infinite $digest() loop?
// controller
// AngularJS 1.2.x infinite digest caused when returning object into directive
$scope.ctrlObjReturnFn = function() {
return {test:true};
}
// view
<div test-dir breaking-object="ctrlObjReturnFn()"></div
// directive
app.directive('testDir', function() {
return {
scope: { breakingObject: '=' },
link: function(scope, element, attrs) {
element.html('printed obj: ' + scope.breakingObject.toString());
}
}
});
解决方案
This is because you're passing in a function as a 2 way binding into the directive, which is not what you should be doing, either pass an object using 2 way binding:
scope: { breakingObject: '=' },
<div test-dir breaking-object="ctrlObjReturnFn"></div>
$scope.ctrlObjReturnFn = {test:true};
or a function using 1 way binding:
scope: { breakingObject: '&' },
<div test-dir breaking-object="ctrlObjReturnFn()"></div>
$scope.ctrlObjReturnFn = function() {
return {test:true};
}
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