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我试图使用Observable来监视元素的clientX。 这样的:如何在angular2中使用clientX?
`const wrap = document.getElementById('wrap');
const body = document.body;
const mouseDown = Observable.fromEvent(wrap, 'mousedown');
const mouseUp = Observable.fromEvent(body, 'mouseup');
const mouseMove = Observable.fromEvent(body, 'mousemove');
mouseDown
.map(event => mouseMove.takeUntil(mouseUp))
.concatAll()
.map(m => ({ x: m.event.clientX , y:m.clientY }))
.subscribe(pos => {
wrap.style.left = pos.x + 'px';
wrap.style.top = pos.y + 'px';
})`
,但我得到了.map(m => ({ x: m.event.clientX , y:m.clientY }))
一个错误说Property 'event' does not exist on type '{}'
,我怎么能解决这个问题?
我尝试添加注释作为通用参数但不起作用 –