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我想要在两个层次上访问纸张输入的值。不幸的是,这是行不通的。这是我的最小例如:多层次的双向数据绑定
<html>
<head>
<base href="https://polygit.org/polymer+:master/webcomponents+:master/shadycss+webcomponents+:master/components/">
<script src="webcomponentsjs/webcomponents-lite.js"></script>
<link rel="import" href="polymer/polymer.html">
<link rel="import" href="paper-input/paper-input.html">
</head>
<body>
<dom-module id="text-block">
<template>
<style>
#input-test {
width: 100%;
}
</style>
<paper-input id="input-test" label="Test" value="{{blockValue}}"></paper-input>
</template>
<script>
class TextBlock extends Polymer.Element {
static get is() {
return 'text-block';
}
static get properties() {
return {
blockValue: {
type: String,
value: '',
observer: '_onBlockValueChanged'
}
}
}
_onBlockValueChanged() {
console.log('Block value changed');
console.log(this.blockValue);
}
}
customElements.define(TextBlock.is, TextBlock);
</script>
</dom-module>
<dom-module id="my-element">
<template>
<text-block block-value="{{_myValue}}"></text-block>
</template>
<script>
HTMLImports.whenReady(function() {
class MyElement extends Polymer.Element {
static get is() { return 'my-element'; }
static get properties() {
return {
_myValue: {
type: String,
value: '',
observer: '_myValueChanged'
}
};
}
_myValueChanged() {
console.log('_myValue changed');
console.log(this._myValue);
}
}
customElements.define(MyElement.is, MyElement);
});
</script>
</dom-module>
<my-element></my-element>
</body>
</html>
当我改变纸张输入的内容,变更转发到文本区元素的blockValue,但不进一步的_myValue主要元素。看起来与 block-value={{_myValue}}
是不够的。我还需要做什么?
我有点希望它是简单的东西一样, 。谢谢!它工作正常。 – Niels