How to realize the drag effect by jquery
This article introduces the relevant knowledge of "how to achieve the drag effect of jquery". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!
The code is as follows:
Document .page {text-align:left;} .dragDiv {border:1px solid # ddd; padding:10px; width:300px; margin:0 auto; border-radius:4px; box-shadow:0 1px 2px # fefefe; position: fixed;} try it yourself. Click and drag to see var _ drag = {}; _ drag.top = 0; / / the position dragged is _ drag.left = 0 above; / / the position dragged is the distance to the left _ drag.maxLeft / / maximum distance to the left _ drag.maxTop; / / maximum distance above _ drag.dragging = false; / / whether to drag the flag / / drag function function bindDrag (el) {var winWidth = $(window) .width (), winHeight = $(window) .height (), objWidth = $(el) .outerWidth (), objHeight = $(el) .outerHeight (); _ drag.maxLeft = winWidth-objWidth, _ drag.maxTop = winHeight-objHeight Var els = el.style,x=0,y=0; var objTop = $(el). Offset (). Top, objLeft = $(el). Offset (). Left; $(el) .mousedown (function (e) {_ drag.dragging = true; _ drag.isDragged = true; x = e.clientX-el.offsetLeft; y = e.clientY-el.offsetTop; el.setCapture & el.setCapture (); $(document) .bind ('mousemove',mouseMove) .bind (' mouseup',mouseUp); return false;})) Function mouseMove (e) {e = e | | window.event; if (_ drag.dragging) {_ drag.top = e.clientY-y; _ drag.left = e.clientX-x; _ drag.top = _ drag.top > _ drag.maxTop? _ drag.maxTop: _ drag.top; _ drag.left = _ drag.left > _ drag.maxLeft? _ drag.maxLeft: _ drag.left; _ drag.top = _ drag.top < 0? 0: _ drag.top _ drag.left = _ drag.left
