我需要我的用户能够通过按住向左按钮将元素从鼠标指针移开,并且当按钮按下时元素应该移近。到目前为止,我有这个:
var divName = 'follow'; // div to follow mouse
// (must be position:absolute)
var offX = 0; // X distance from mouse
var offY = 0; // Y distance from mouse
function mouseX(evt) {
if (!evt) evt = window.event;
if (evt.pageX) return evt.pageX;
else if (evt.clientX) return evt.clientX + (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);
else return 0;
}
function mouseY(evt) {
if (!evt) evt = window.event;
if (evt.pageY) return evt.pageY;
else if (evt.clientY) return evt.clientY + (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);
else return 0;
}
function follow(evt) {
if (document.getElementById) {
var obj = document.getElementById(divName).style;
obj.visibility = 'visible';
obj.left = (parseInt(mouseX(evt)) + offX) + 'px';
obj.top = (parseInt(mouseY(evt)) + offY) + 'px';
}
}
document.onmousemove = follow;
function discharge() { //Move away
offX += 1;
offY += 1;
}
function pull() { //Come closer
if (offX > 0) {
offX -= 1;
}
if (offY > 0) {
offY -= 1;
}
}
document.onmousedown = discharge;
document.onmouseup = pull;
offX
和offY
是元素与鼠标的距离。另外,这只是脚本的一部分。 offX
和offY
在不同的部分发挥作用,除了这种推/拉之外,它起作用。
编辑:已更新以包含整个文件,here是一个小提琴。
更多信息:我的主要目标是让div内的图像跟随鼠标移动,并根据鼠标的状态靠近/移动。如果有人有不同的方法来实现这一点,那么也将非常感激。
答案 0 :(得分:0)
这是使用JQuery的完整示例:
var divName = 'follow'; // div to follow mouse
// (must be position:absolute)
var offX = 0; // X distance from mouse
var offY = 0; // Y distance from mouse
var mouseX;
var mouseY;
var mouseState = 0;
var _this = this;
function follow(evt) {
if(_this.mouseState === 1) {
discharge();
} else {
pull();
}
if (document.getElementById) {
var obj = document.getElementById(divName).style;
obj.visibility = 'visible';
obj.left = evt.pageX + _this.offX + 'px';
obj.top = evt.pageY + _this.offY + 'px';
}
}
document.onmousemove = follow;
function discharge() { //Move away
_this.offX += 1;
_this.offY += 1;
}
function pull() { //Come closer
if (_this.offX > 0) {
_this.offX -= 1;
}
if (_this.offY > 0) {
_this.offY -= 1;
}
}
$(document).mousedown(function(e){_this.mouseState = 1;});
$(document).mouseup(function(e){_this.mouseState = 0; });
答案 1 :(得分:0)
你想要的是两个偏移,即鼠标和元素的偏移。
var offX = 100; // mouse X-axis
var offY = 50; // mouse Y-axis
var elemOffX = 950; // elem X-axis
var elemOffY = 600; // elem Y-axis
// Now get the distance from the elem to the mouse:
var diffX = offX - elemOffX; // get the diff X
var diffY = offY - elemOffY; // get the diff Y
// Depending on your interval you might want to change the factor,
// this will move it in steps of 10%
var newOffX = offX + (diffX * 0.1); // set this as new result for the element's X
var newOffY = offY + (diffY * 0.1); // set this as new result for the element's Y
newOff
的 + 更改为 -
在您的示例中,您执行此操作:offY-1
,您需要将其更改为offY=offY-1
或offY-=1