[原创]select内容过长时的提示框

来源：互联网发布：淘宝客服售前话术编辑：程序博客网时间：2024/05/16 06:37

<div id=div1 style="overflow:auto;height:expression(5*15);width:expression(document.all.s1.offsetWidth+18);">
<select name=s1 size=6 style="width:120" onmousemove="showTitle(this);" onmouseout="hideTitle(this);">
<option>aaaaaaaaaaaaaaaaaaaaaa1
<option>bbbbbbbbbbbbbbbbbbbbbbbbb1
<option>cccccccccccccccccccccccc1
<option>ddddddddddddddddddddddd1
<option>eeeeeeeeeeeeeeeeeeeeeee1
<option>fffffffffffffffffffffffffff1
</select>
</div>
<script>
//定义Popup
var oP=window.createPopup();
oP.document.body.style.background="beige";
//popup是否已显示
var oPShow=0;
function showTitle(obj){
var h=event.offsetY;
var fontsize=(obj.style.fontSize==""?(obj.currentStyle.fontSize==""?"9":obj.currentStyle.fontSize):obj.style.fontSize);
fontsize=parseInt(fontsize)*1.6;
var l=parseInt(h/fontsize);
oP.document.body.innerText=obj.options[l].text;
len=obj.options[l].text.length*8;
oP.show(event.offsetX+20,event.offsetY+fontsize+5,len,fontsize,document.body);
oPShow=1;
}
function hideTitle(obj){
if(oPShow==1)oP.hide();
}
</script>