Angularjs 将过滤器作为角度指令参数传递
我想在我的应用程序中将w filter作为参数传递给自定义指令。我想做一些类似的事情: 应用中的用法:Angularjs 将过滤器作为角度指令参数传递,angularjs,angularjs-directive,angular-filters,Angularjs,Angularjs Directive,Angular Filters,我想在我的应用程序中将w filter作为参数传递给自定义指令。我想做一些类似的事情: 应用中的用法: <my-directive data='dataVariable' dataFilter='numericFilter: 123'/> 当我按照上面的shwon操作时,会出现与语法相关的错误:未识别,未找到依赖项注入筛选器,或者筛选器什么也不做。您可以使用筛选器服务动态获取所需的筛选器: angular.module('app').directive('myDir', ['$fi
<my-directive data='dataVariable' dataFilter='numericFilter: 123'/>
当我按照上面的shwon操作时,会出现与语法相关的错误:未识别,未找到依赖项注入筛选器,或者筛选器什么也不做。您可以使用筛选器服务动态获取所需的筛选器:
angular.module('app').directive('myDir', ['$filter', function($filter) {
....
link: function($scope, $el, $attr) {
var desiredFilter = $filter($attr['dataFilter']);
//desiredFilter is now a function that will run the filter passed, it will throw exception if filter is not found
}
}
我希望这有帮助。您可以通过使用筛选器服务动态获取所需的筛选器:
angular.module('app').directive('myDir', ['$filter', function($filter) {
....
link: function($scope, $el, $attr) {
var desiredFilter = $filter($attr['dataFilter']);
//desiredFilter is now a function that will run the filter passed, it will throw exception if filter is not found
}
}
我希望这会有所帮助。您可以根据属性在编译函数中构建表达式。 但是,我建议使用@PinhasHouri建议的$filter
可以根据属性在编译函数中构建表达式。 但是,我建议使用@PinhasHouri建议的$filter 您的dataFilter属性应该是data filter。dataFilter属性在指令中是如何工作的?显示指令代码中未使用my directivedataFilter的内容。只需要格式化HTML输出。您的dataFilter属性应该是data filter。dataFilter属性在指令中是如何工作的?显示指令代码中未使用my directivedataFilter的内容。它只需要格式化HTML输出。
angular.module('app').directive('myDir', ['$filter', function($filter) {
....
link: function($scope, $el, $attr) {
var desiredFilter = $filter($attr['dataFilter']);
//desiredFilter is now a function that will run the filter passed, it will throw exception if filter is not found
}
}
<!DOCTYPE html>
<html>
<head>
<script data-require="angular.js@*" data-semver="1.3.0" src="//code.angularjs.org/1.3.0/angular.js"></script>
<link rel="stylesheet" href="style.css" />
<script src="script.js"></script>
</head>
<body>
<h1>Hello Plunker!</h1>
<div apply-filter
filter-data="Hello"
filter-expr="append:'C'"></div>
<script>
var app = angular.module("app",[]);
app.directive("applyFilter",function(){
return{
filterExpr: "@",
filterData: "@",
compile: function(element,attrs){
element.append("{{'" + attrs.filterData + "'|" + attrs.filterExpr + "}}");
}
}
});
app.filter("append",function(){
return function(v,p){
return v + p;
}
});
angular.bootstrap(document,["app"]);
</script>
</body>
</html>