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我试图向 div 添加拖动手柄,但 div 不移动,只是手柄。

但是,如果我将位置更改为应该移动的 div 的绝对位置,我实际上可以在 div 周围移动,但可以从任何地方移动,而不仅仅是拖动手柄。

有小费吗 ?我为此创建了一个jsfiddle。

http://jsfiddle.net/dymond/tQdFZ/11/

一些代码。

var draggable = document.getElementsByClassName('hand'),
        draggableCount = draggable.length,
        i, currZ = 1;
    function startDrag(evt) {

        var diffX = evt.clientX - this.offsetLeft,
            diffY = evt.clientY - this.offsetTop,
            that = this;
        this.style.opacity = "0.5";
        this.style.zIndex = currZ++;

        function moveAlong(evt) {
            that.style.left = (evt.clientX - diffX) + 'px';
            that.style.top = (evt.clientY - diffY) + 'px';
        }
        function stopDrag() {
            document.removeEventListener('mousemove', moveAlong);
            document.removeEventListener('mouseup', stopDrag);
            changeClass()
        }
        function changeClass() {
            var diceClass = document.getElementsByClassName("hand");
            for (var i = 0; i < diceClass.length; i++) {
                diceClass[i].style.opacity = "1";
            }
        }

        document.addEventListener('mouseup', stopDrag);
        document.addEventListener('mousemove', moveAlong);
    }

    for (i = 0; i < draggableCount; i += 1) {
        draggable[i].addEventListener('mousedown', startDrag);
    }
4

1 回答 1

1

尝试设置css:

.draggable { position: absolute; ...

并更改js:

function moveAlong(evt) {
    that.parentNode.style.left = (evt.clientX - diffX) + 'px';
    that.parentNode.style.top = (evt.clientY - diffY) + 'px';
}

既然你想移动父节点,通过拖动手柄..

于 2013-03-20T23:24:44.033 回答