浅谈javascript中的三种弹窗
js中三种弹窗
1)alert弹出警告无返回值---------alert('第一行\n第二行');
2)confirm()选择确定或取消,返回t或f----varresult=confirm('是否删除!');
3)prompt()弹出输入框,返回输入内容----varvalue=prompt('输入你的名字:','请在这里输入名字');
当然也可以自定义好看的样式。下面代码有问题明天再改。
<script> //window.confirm //prompt window.alert=function(title,str) { varshield=document.createElement("DIV"); shield.id="shield"; shield.style.position="absolute"; shield.style.left="0px"; shield.style.top="0px"; shield.style.width="100%"; shield.style.height=document.body.scrollHeight+"px"; //弹出对话框时的背景颜色 shield.style.background="#fff"; shield.style.textAlign="center"; shield.style.zIndex="25"; //背景透明IE有效 //shield.style.filter="alpha(opacity=0)"; varalertFram=document.createElement("DIV"); alertFram.id="alertFram"; alertFram.style.position="absolute"; alertFram.style.left="50%"; alertFram.style.top="50%"; alertFram.style.marginLeft="-225px"; alertFram.style.marginTop="-75px"; alertFram.style.width="450px"; alertFram.style.height="150px"; alertFram.style.background="#ff0000"; alertFram.style.textAlign="center"; alertFram.style.lineHeight="150px"; alertFram.style.zIndex="300"; strHtml="<ulstyle=\"list-style:none;margin:0px;padding:0px;width:100%\">\n"; strHtml+="<listyle=\"background:#DD828D;text-align:left;padding-left:20px;font-size:14px;font-weight:bold;height:25px;line-height:25px;border:1pxsolid#F9CADE;\">"+title+"</li>\n"; strHtml+="<listyle=\"background:#fff;text-align:center;font-size:12px;height:120px;line-height:120px;border-left:1pxsolid#F9CADE;border-right:1pxsolid#F9CADE;\">"+str+"</li>\n"; strHtml+="<listyle=\"background:#FDEEF4;text-align:center;font-weight:bold;height:25px;line-height:25px;border:1pxsolid#e85727;\"><inputtype=\"button\"value=\"确定\"onclick=\"doOk()\"/></li>\n"; strHtml+="</ul>\n"; alertFram.innerHTML=strHtml; document.body.appendChild(alertFram); document.body.appendChild(shield); varad=setInterval("doAlpha()",5); this.doOk=function(){ alertFram.style.display="none"; shield.style.display="none"; } alertFram.focus(); document.body.onselectstart=function(){returnfalse;}; } </script>
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