当前,当我将包含自定义方法调用的匿名函数传递到事件回调中时,我的代码工作,但当我试图在回调中直接调用自定义方法时,代码就无法工作.IE:
var that = this;
// THIS WORKS:
gt.pubads().addEventListener('slotRenderEnded', function(event) {
that.onSlotRenderEnded(event);
});
// THIS DOES NOT. why?
gt.pubads().addEventListener('slotRenderEnded', that
我有以下依赖项属性:
public bool UndoZoom
{
get { return (bool)GetValue(UndoZoomProperty); }
set { SetValue(UndoZoomProperty, value); }
}
// Using a DependencyProperty as the backing store for UndoZoom. This enables animation, styling, binding, etc...
p
情况是这样的。我有一个带有子组件的父组件。父组件执行ajax调用,并将数据向下推到子组件。
当子组件接收到新数据时,在componentDidUpdate (子组件)中,我将重新设置它的内部状态。
componentDidUpdate(prevProps, prevState) {
if ( prevProps.myRow !== this.props.myRow ) { //check for when new data is passed into this component from its parent / container...
this.se