<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <style type="text/css"> #dhtmltooltip{ position: absolute; left: -300px; width: 150px; border: 1px solid black; padding: 2px; background-color: lightyellow; visibility: hidden; z-index: 100; filter: progid:DXImageTransform.Microsoft.Shadow(color=gray,direction=135); } #dhtmlpointer{ position:absolute; left: -300px; z-index: 101; visibility: hidden; } .myTest{width: 100px;overflow: hidden;white-space: nowrap;text-overflow:ellipsis;} </style> </head> <body> <div class="myTest" onMouseover="ddrivetip($(this).text(), 300,'red')"; onMouseout="hideddrivetip()">ssssssss</div> </body> <script type="text/javascript" src="jquery-1.11.3.min.js"></script> <script type="text/javascript"> var offsetfromcursorX=12 //Customize x offset of tooltip var offsetfromcursorY=10 //Customize y offset of tooltip var offsetdivfrompointerX=10 //Customize x offset of tooltip DIV relative to pointer image var offsetdivfrompointerY=14 //Customize y offset of tooltip DIV relative to pointer image. Tip: Set it to (height_of_pointer_image-1). document.write('<div id="dhtmltooltip"></div>') //write out tooltip DIV document.write('<img id="dhtmlpointer">') //write out pointer image var ie=document.all var ns6=document.getElementById && !document.all var enabletip=false if (ie||ns6) var tipobj=document.all? document.all["dhtmltooltip"] : document.getElementById? document.getElementById("dhtmltooltip") : "" var pointerobj=document.all? document.all["dhtmlpointer"] : document.getElementById? document.getElementById("dhtmlpointer") : "" function ietruebody(){ return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body } function ddrivetip(thetext, thewidth, thecolor){ if (ns6||ie){ if (typeof thewidth!="undefined") tipobj.style.width=thewidth+"px" if (typeof thecolor!="undefined" && thecolor!="") tipobj.style.backgroundColor=thecolor tipobj.innerHTML=thetext //下面这段是用来判断，当字符串大于多少时才出现tip框。 var len = 0; for (var i=0; i<thetext.length; i++) { //单字节加1 if (thetext[i].match(/[^x00-xff]/ig) != null) { len+=2; } else { len++; } } if(len > 10) enabletip=true return false } } function positiontip(e){ if (enabletip){ var nondefaultpos=false var curX=(ns6)?e.pageX : event.clientX+ietruebody().scrollLeft; var curY=(ns6)?e.pageY : event.clientY+ietruebody().scrollTop; //Find out how close the mouse is to the corner of the window var winwidth=ie&&!window.opera? ietruebody().clientWidth : window.innerWidth-20 var winheight=ie&&!window.opera? ietruebody().clientHeight : window.innerHeight-20 var rightedge=ie&&!window.opera? winwidth-event.clientX-offsetfromcursorX : winwidth-e.clientX-offsetfromcursorX var bottomedge=ie&&!window.opera? winheight-event.clientY-offsetfromcursorY : winheight-e.clientY-offsetfromcursorY var leftedge=(offsetfromcursorX<0)? offsetfromcursorX*(-1) : -1000 //if the horizontal distance isn't enough to accomodate the width of the context menu if (rightedge<tipobj.offsetWidth){ //move the horizontal position of the menu to the left by it's width tipobj.style.left=curX-tipobj.offsetWidth+"px" nondefaultpos=true } else if (curX<leftedge) tipobj.style.left="5px" else{ //position the horizontal position of the menu where the mouse is positioned tipobj.style.left=curX+offsetfromcursorX-offsetdivfrompointerX+"px" pointerobj.style.left=curX+offsetfromcursorX+"px" } //same concept with the vertical position if (bottomedge<tipobj.offsetHeight){ tipobj.style.top=curY-tipobj.offsetHeight-offsetfromcursorY+"px" nondefaultpos=true } else{ tipobj.style.top=curY+offsetfromcursorY+offsetdivfrompointerY+"px" pointerobj.style.top=curY+offsetfromcursorY+"px" } tipobj.style.visibility="visible" if (!nondefaultpos) pointerobj.style.visibility="visible" else pointerobj.style.visibility="hidden" } } function hideddrivetip(){ if (ns6||ie){ enabletip=false tipobj.style.visibility="hidden" pointerobj.style.visibility="hidden" tipobj.style.left="-1000px" tipobj.style.backgroundColor='' tipobj.style.width='' } } document.onmousemove=positiontip </script> </html>