Polymer core-ajax 为什么回调不起作用?
Polymer core-ajax why callback not work?
这是我的代码:
<!DOCTYPE html>
<html>
<head>
<script src="/client/polymer-0.5.2/bower_components/webcomponentsjs/webcomponents.min.js"></script>
<link href="/client/polymer-0.5.2/bower_components/polymer/polymer.html" rel="import">
<link href="/client/polymer-0.5.2/bower_components/core-ajax/core-ajax.html" rel="import">
</head>
<body>
<core-ajax id="directorInfoAjax" url="/main.ashx?action=directorInfo" handleAs="text" on-core-response="callback">
<script>
Polymer(
{
callback: function ()
{
var bp = this.response;
}
});
</script>
</core-ajax>
<script>
document.addEventListener('polymer-ready', function()
{
document.querySelector("#directorInfoAjax").go();
});
</script>
</body>
</html>
怎么了?回调不开火
11111111111111111111111111111111111
222222222222222222222222222222222222
333333333333333333333333333333333333
查看以下教程可能会帮助您解决问题:-
http://www.tutorialsavvy.com/2014/07/understanding-polymer-core-ajax-element.html
据我所知,您没有按应有的方式使用 <core-ajax>
。
这里有一个 <core-ajax>
的工作示例:
<!doctype html>
<html>
<head>
<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<title>seed-element Demo</title>
<script src="https://www.polymer-project.org/components/webcomponentsjs/webcomponents.js"></script>
<link rel="import" href="https://www.polymer-project.org/components/polymer/polymer.html">
<link rel="import" href="https://www.polymer-project.org/components/core-elements/core-elements.html">
<link rel="import" href="https://www.polymer-project.org/components/paper-elements/paper-elements.html">
</head>
<body>
<core-ajax id="directorInfoAjax" url="http://echo.jsontest.com/key/value" handleAs="text" on-core-response="{{callback}}"></core-ajax>
<script>
document.addEventListener('polymer-ready', function() {
var ajax = document.querySelector("core-ajax");
ajax.addEventListener("core-response", function(e) {
alert("I received a response "+ this.response);
console.log(this.response);
}
);
ajax.go(); // Call its API methods.
});
</script>
</body>
</html>
在您的代码中,组件内部的 Polyymer 声明似乎不起作用,即使起作用,回调函数也需要包装在 {{ }}
.
中
这里有一个笨蛋:http://plnkr.co/edit/rOuNPu99D7ROX4ewbLnK?p=preview
希望对您有所帮助,如果没有帮助,请随时询问更多信息!
[编辑] 我写了一个更简单的例子
这是我的代码:
<!DOCTYPE html>
<html>
<head>
<script src="/client/polymer-0.5.2/bower_components/webcomponentsjs/webcomponents.min.js"></script>
<link href="/client/polymer-0.5.2/bower_components/polymer/polymer.html" rel="import">
<link href="/client/polymer-0.5.2/bower_components/core-ajax/core-ajax.html" rel="import">
</head>
<body>
<core-ajax id="directorInfoAjax" url="/main.ashx?action=directorInfo" handleAs="text" on-core-response="callback">
<script>
Polymer(
{
callback: function ()
{
var bp = this.response;
}
});
</script>
</core-ajax>
<script>
document.addEventListener('polymer-ready', function()
{
document.querySelector("#directorInfoAjax").go();
});
</script>
</body>
</html>
怎么了?回调不开火
11111111111111111111111111111111111 222222222222222222222222222222222222 333333333333333333333333333333333333
查看以下教程可能会帮助您解决问题:- http://www.tutorialsavvy.com/2014/07/understanding-polymer-core-ajax-element.html
据我所知,您没有按应有的方式使用 <core-ajax>
。
这里有一个 <core-ajax>
的工作示例:
<!doctype html>
<html>
<head>
<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<title>seed-element Demo</title>
<script src="https://www.polymer-project.org/components/webcomponentsjs/webcomponents.js"></script>
<link rel="import" href="https://www.polymer-project.org/components/polymer/polymer.html">
<link rel="import" href="https://www.polymer-project.org/components/core-elements/core-elements.html">
<link rel="import" href="https://www.polymer-project.org/components/paper-elements/paper-elements.html">
</head>
<body>
<core-ajax id="directorInfoAjax" url="http://echo.jsontest.com/key/value" handleAs="text" on-core-response="{{callback}}"></core-ajax>
<script>
document.addEventListener('polymer-ready', function() {
var ajax = document.querySelector("core-ajax");
ajax.addEventListener("core-response", function(e) {
alert("I received a response "+ this.response);
console.log(this.response);
}
);
ajax.go(); // Call its API methods.
});
</script>
</body>
</html>
在您的代码中,组件内部的 Polyymer 声明似乎不起作用,即使起作用,回调函数也需要包装在 {{ }}
.
这里有一个笨蛋:http://plnkr.co/edit/rOuNPu99D7ROX4ewbLnK?p=preview
希望对您有所帮助,如果没有帮助,请随时询问更多信息!
[编辑] 我写了一个更简单的例子