//在控制臺輸出a.js:85?Uncaught?ReferenceError:?disY?is?not?defined
????at?HTMLDocument.document.onmouseover?，但也disY也沒在onmouseover下，它是在
onmousemove的函數(shù)中定義的
function?fnDown(e)?{??????????????????????
????e?=?e?||?window.event;
????var?oDarg?=?document.getElementById('loginPanel'),
????????ow?=?oDarg.offsetLeft,
????????oh?=?oDarg.offsetTop,
????????ew?=?e.clientX,
????????eh?=?e.clientY,
????????disX?=?ew?-?ow,?????????????????????????
????????disY?=?eh?-?oh;
????document.onmousemove?=?function?(e)?{??????????
????????e?=?e?||?window.event;
????????fnMove(e,?disX,?disY);
????}
????document.onmouseup?=?function?()?{?????????????
????????document.onmousemove?=?null;
????????document.onmouseup?=?null;
????}
}
2017-09-27
function?fnMove(e,posX,posY){ ??var?oDrag=document.getElementById('loginPanel'), ??????l=e.clientX-posX,??//是變化的值 ??????t=e.clientY-posY, ??????winW=document.documentElement.clientWidth?||?document.body.clientWidth, ??????winH=document.documentElement.clientHeight?||?document.body.clientHeight, ??????maxW=winW-oDrag.offsetWidth-10, ??????maxH=winH-oDrag.offsetHeight; ??if(l<0){ ????l=0; ??}else?if(l>maxW){ ????l=maxW; ??} ??if(t<0){ ????t=10; ??}else?if(t>maxH){ ????t=maxH; ??} ??oDrag.style.left=l+'px'; ??oDrag.style.top=t+'px'; }2017-09-26
fnMove(e,?disX,?disY); ?這個方法是怎么寫的？
2017-09-26
它說你沒定義 ?那你把
var?oDarg?=?document.getElementById('loginPanel'),
????????ow?=?oDarg.offsetLeft,
????????oh?=?oDarg.offsetTop,
????????ew?=?e.clientX,
????????eh?=?e.clientY,
????????disX?=?ew?-?ow,?????????????????????????
????????disY?=?eh?-?oh;
放到
document.onmousemove?=?function?(e)?{??????????
????????e?=?e?||?window.event;
????????fnMove(e,?disX,?disY);
????}
這里面試試。