本文实例为大家分享了js实现div色块碰撞的具体代码，供大家参考，具体内容如下
描述：
生成两个div色块，一个可以拖动，一个不可以，用拖动的去撞击不能动的，会将这个色块随机撞到一个位置，改变颜色。
效果：
实现：
js文件：
function DragObj(_obj) {
this.obj=_obj;
this.point={};
this.moveBool=false;
this.obj.self=this;
this.obj.addEventListener("mousedown",this.mouseHandler);
this.obj.addEventListener("mouseup",this.mouseHandler);
this.obj.addEventListener("mousemove",this.mouseHandler);
this.obj.addEventListener("mouseleave",this.mouseHandler);
}
DragObj.prototype={
mouseHandler:function (e) {
if(!e){
e=window.event;
}
if(e.type=="mousedown"){
this.self.moveBool=true;
this.self.point.x=e.offsetX;
this.self.point.y=e.offsetY;
}else if(e.type=="mousemove"){
if(!this.self.moveBool) return;
this.self.obj.style.left=(e.clientX-this.self.point.x)+"px"
this.self.obj.style.top=(e.clientY-this.self.point.y)+"px"
}else if(e.type=="mouseup" || e.type=="mouseleave"){
this.self.moveBool=false;
}
},
removeEvent:function () {
this.obj.removeEventListener("mousedown",this.mouseHandler);
this.obj.removeEventListener("mouseup",this.mouseHandler);
this.obj.removeEventListener("mousemove",this.mouseHandler);
this.obj.removeEventListener("mouseleave",this.mouseHandler);
this.obj=null;
this.point=null;
}
};
var HitTest=HitTest || (function () {
return {
to:function (display0,display1) {
var rect=display0.getBoundingClientRect();
var rect1=display1.getBoundingClientRect();
if(rect.left>=rect1.left &&
rect.left<=rect1.left+rect1.width
&& rect.top>=rect1.top && rect.top<=rect1.top+rect1.height){
return true;
}
if(rect.left+rect.width>=rect1.left && rect.left+rect.width<=rect1.left+rect1.width && rect.top>=rect1.top
&& rect.top<=rect1.top+rect1.height){
return true;
}
if(rect.left>=rect1.left &&
rect.left<=rect1.left+rect1.width
&& rect.top+rect.height>=rect1.top &&
rect.top+rect.height<=rect1.top+rect1.height){
return true;
}
if(rect.left+rect.width>=rect1.left && rect.left+rect.width<=rect1.left+rect1.width &&
rect.top+rect.height>=rect1.top
&& rect.top+rect.height<=rect1.top+rect1.height){
return true;
}
}
}
})();
var LoadImg=LoadImg || (function () {
return {
load:function (listSrc,callBack) {
this.callBack=callBack;
this.listSrc=listSrc;
this.num=0;
this.imgArr=[];
var img=new Image();
img.addEventListener("load",this.loadHandler.bind(this));
img.src=listSrc[0];
},
loadHandler:function (e) {
if(!e){
e=window.event;
}
e.currentTarget.removeEventListener
("load",this.loadHandler.bind(this));
this.imgArr[this.num]=e.currentTarget;
if(this.num==this.listSrc.length-1){
this.callBack(this.imgArr)
return;
}
var img=new Image();
this.num++;
img.addEventListener("load",this.loadHandler.bind(this));
img.src=this.listSrc[this.num];
}
}
})();
html：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
div{
width: 200px;
height: 200px;
position: absolute;
}
</style>
<script src="/UploadFiles/2021-04-02/dragObj.js">
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。