window.onload=drag;??function drag(){??var title_box = document.getElementById('title_box');???title_box.onmousedown=fnDown;??}???function fnDown(event){??var oDrag = document.getElementById('title_box'),???disX = event.clientX-oDrag.offsetLeft,???disY = event.clientY-oDrag.offsetTop;??document.onmousemove=function(event){???fnMove(event,disX,disY);???}??}?function fnMove(event,disX,disY){???var oDrag = document.getElementById('title_box'),???l = event.clientX-disX,???t = event.clientY-disY;???oDrag.style.left = l+'px';???oDrag.style.top = t+'px';??}
想寫一個(gè)簡單的窗口拖動(dòng)代碼,但總是實(shí)現(xiàn)不了,這樣寫有什么問題?
1679639162
2015-08-27 15:50:01