我使用以下函数拖动带手柄的div。
问题是在某些浏览器中,当我同时拖动文本时,会在页面上选择并突出显示文本..
任何想法如何解决?
function enableDragging (ele) {
var dragging = dragging || false,
x, y, Ox, Oy,
current;
enableDragging.z = enableDragging.z || 1;
var grabber = document.getElementById("myHandle");
grabber.onmousedown = function (ev) {
ev = ev || window.event;
var target = ev.target || ev.srcElement;
current = target.parentElement;
dragging = true;
x = ev.clientX;
y = ev.clientY;
Ox = current.offsetLeft;
Oy = current.offsetTop;
current.style.zIndex = ++enableDragging.z;
console.log(dragging);
document.onmousemove = function(ev) {
ev = ev || window.event;
//pauseEvent(ev);
if (dragging == true) {
var Sx = ev.clientX - x + Ox,
Sy = ev.clientY - y + Oy;
current.style.top = Sy + "px";
current.style.left = Sx + "px";
document.body.focus();
// prevent text selection in IE
document.onselectstart = function () { return false; };
// prevent IE from trying to drag an image
ev.ondragstart = function() { return false; };
return false;
}
}
document.onmouseup = function(ev) {
//alert("stop");
dragging && (dragging = false);
}
};
}
function pauseEvent(e){
if(e.stopPropagation) e.stopPropagation();
if(e.preventDefault) e.preventDefault();
e.cancelBubble=true;
e.returnValue=false;
return false;
}
拖动开始于:
var ele = document.getElementById("divWrapper");
enableDragging(ele);
答案 0 :(得分:0)
对不起,我忘了你上一篇文章中的第二个问题。但是,您还需要阻止onmouseup
的默认值:
document.onmouseup = function(ev) {
ev = ev || window.event;
dragging && (dragging = false);
if (ev.preventDefault) {
ev.preventDefault();
} else {
ev.cancelBubble=true;
ev.returnValue=false;
}
return false;
}
修改强>
或者只使用您的pauseEvent()
功能。请注意,在您的代码中有这样的:ev.ondragstart = function () {...};
。将事件处理程序分配给Event对象没有用,而是将其分配给document
或document.body
。并且在每个eventhandler函数中也使用pauseEvent()
。
将document.onselectstart
和document.ondragstart
移到onmousedown
处理程序似乎更好,因为当执行转移到onmousemove()
时,这些事件已经被触发。