判断鼠标是否在某个区域内

var divDom: any = document.getElementById('content') //所在的区域var oEvent = ev || eventvar x = oEvent.clientX   //当前鼠标的x轴var y = oEvent.clientY    //当前鼠标所在的y轴var divLeft = divDom.offsetLeftvar divTop = divDom.offsetTopvar divLeft1 = divDom.offsetLeft + divDom.offsetWidthvar divTop1 = divDom.offsetTop + divDom.offsetHeightif (!(x < divLeft || x > divLeft1 || y < divTop || y > divTop1 )) {console.log("存在")}else{console.log("不存在")}