js鼠标移动在title中显示图片的效果代码

时间:2020-05-12 人气:0

1.js代码

//***********默认设置定义.*********************
tPopWait=50;//停留tWait豪秒后显示提示。
tPopShow=5000;//显示tShow豪秒后关闭提示
showPopStep=20;
popOpacity=99;

//***************内部变量定义*****************
sPop=null;
curShow=null;
tFadeOut=null;
tFadeIn=null;
tFadeWaiting=null;

document.write("<style type='text/css' id='defaultPopStyle'>");
document.write(".cPopText { line-break : normal;word-break : break-all ; background-color: #FEFCF3;color:#000000; border: 1px #E7B68C solid;padding-top: 2px; padding-right: 4px; padding-left: 4px; padding-bottom: 2px;font-size: 12px;width:468px; filter: Alpha(Opacity=0)}");
document.write("</style>");
document.write("<div id='dypopLayer' style='position:absolute;z-index:1000;' class='cPopText'></div>");

function showPopupText(){
var o=event.srcElement;
    MouseX=event.x;
    MouseY=event.y;
    if(o.alt!=null && o.alt!=""){o.dypop=o.alt;o.alt=""};
if(o.title!=null && o.title!=""){o.dypop=o.title;o.title=""};
    if(o.dypop!=sPop) {
            sPop=o.dypop;
            clearTimeout(curShow);
            clearTimeout(tFadeOut);
            clearTimeout(tFadeIn);
            clearTimeout(tFadeWaiting);
            if(sPop==null || sPop=="") {
                dypopLayer.innerHTML="";
                dypopLayer.style.filter="Alpha()";
                dypopLayer.filters.Alpha.opacity=0;
                }
            else {
                if(o.dyclass!=null) popStyle=o.dyclass
                    else popStyle="cPopText";
                curShow=setTimeout("showIt()",tPopWait);
            }

    }
}

function showIt(){
        dypopLayer.className=popStyle;
        dypopLayer.innerHTML=sPop;
        popWidth=dypopLayer.clientWidth;
        popHeight=dypopLayer.clientHeight;
        if(MouseX+12+popWidth>document.body.clientWidth) popLeftAdjust=-popWidth-24
            else popLeftAdjust=0;
        if(MouseY+12+popHeight>document.body.clientHeight) popTopAdjust=-popHeight-24
            else popTopAdjust=0;

        dypopLayer.style.left=MouseX+12+document.body.scrollLeft+popLeftAdjust;
        dypopLayer.style.top=MouseY+12+document.body.scrollTop+popTopAdjust;
        dypopLayer.style.filter="Alpha(Opacity=0)";
        fadeOut();
}

function fadeOut(){
    if(dypopLayer.filters.Alpha.opacity<popOpacity) {
        dypopLayer.filters.Alpha.opacity+=showPopStep;
        tFadeOut=setTimeout("fadeOut()",1);
        }
        else {
            dypopLayer.filters.Alpha.opacity=popOpacity;
            tFadeWaiting=setTimeout("fadeIn()",tPopShow);
            }
}

function fadeIn(){
    if(dypopLayer.filters.Alpha.opacity>0) {
        dypopLayer.filters.Alpha.opacity-=1;
        tFadeIn=setTimeout("fadeIn()",1);
        }
}
document.onmouseover=showPopupText;

2.html代码包含js代码即可，使用范例
具体的看给出的测试代码。

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<title>无标题文档</title>

//***************内部变量定义***************** 
sPop=null; 
curShow=null; 
tFadeOut=null; 
tFadeIn=null; 
tFadeWaiting=null;

document.write("<style type='text/css' id='defaultPopStyle'>"); 
document.write(".cPopText { line-break : normal;word-break : break-all ; background-color: #FEFCF3;color:#000000; border: 1px #E7B68C solid;padding-top: 2px; padding-right: 4px; padding-left: 4px; padding-bottom: 2px;font-size: 12px;width:468px; filter: Alpha(Opacity=0)}"); 
document.write("</style>"); 
document.write("<div></div>");

function showIt(){ 
        dypopLayer.className=popStyle; 
        dypopLayer.innerHTML=sPop; 
        popWidth=dypopLayer.clientWidth; 
        popHeight=dypopLayer.clientHeight; 
        if(MouseX+12+popWidth>document.body.clientWidth) popLeftAdjust=-popWidth-24 
            else popLeftAdjust=0; 
        if(MouseY+12+popHeight>document.body.clientHeight) popTopAdjust=-popHeight-24 
            else popTopAdjust=0; 
         
        dypopLayer.style.left=MouseX+12+document.body.scrollLeft+popLeftAdjust; 
        dypopLayer.style.top=MouseY+12+document.body.scrollTop+popTopAdjust; 
        dypopLayer.style.filter="Alpha(Opacity=0)"; 
        fadeOut(); 
}

function fadeIn(){ 
    if(dypopLayer.filters.Alpha.opacity>0) { 
        dypopLayer.filters.Alpha.opacity-=1; 
        tFadeIn=setTimeout("fadeIn()",1); 
        } 
} 
document.onmouseover=showPopupText; 
</script> 
</head> 
<body> 
测试中心，测试代码。理论上应该没问题了 
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</body> 
</html>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

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