我们在之前的文章中给大家介绍了JavaScript中alert()的使用详解,我们都知道JavaScript中alert()弹出消息对话框,并且alert消息对话框通常用于一些对用户的提示信息,他的样式一直是默认的,那么我能不能修改他的样式呢,今天就带大家学习下JavaScript修改alert样式的方法介绍!
JavaScript修改alert样式的方法介绍
<script language="javascript" type="text/javascript"> window.alert = function(txt) { var shield = 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"; shield.style.background = "#333"; shield.style.textAlign = "center"; shield.style.zIndex = "10000"; shield.style.filter = "alpha(opacity=0)"; var alertFram = 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 = "#ccc"; alertFram.style.textAlign = "center"; alertFram.style.lineHeight = "150px"; alertFram.style.zIndex = "10001"; strHtml = "<ul style="list-style:none;margin:0px;padding:0px;width:100%"> "; strHtml += " <li style="background:#DD828D;text-align:left;padding-left:20px;font-size:14px;font-weight:bold;height:25px;line-height:25px;border:1px solid #F9CADE;">[系统提示]</li> "; strHtml += " <li style="background:#fff;text-align:center;font-size:12px;height:120px;line-height:120px;border-left:1px solid #F9CADE;border-right:1px solid #F9CADE;">"+txt+"</li> "; strHtml += " <li style="background:#FDEEF4;text-align:center;font-weight:bold;height:25px;line-height:25px; border:1px solid #F9CADE;"> <input type="button" value="确 定" onclick="doOk()" /></li> "; strHtml += "</ul> "; alertFram.innerHTML = strHtml; document.body.appendChild(alertFram); document.body.appendChild(shield); var c = 0; this.doAlpha = function(){ if (c++ > 20){clearInterval(ad);return 0;} shield.style.filter = "alpha(opacity="+c+");"; } var ad = setInterval("doAlpha()",5); this.doOk = function(){ alertFram.style.display = "none"; shield.style.display = "none"; } alertFram.focus(); document.body.onselectstart = function(){return false;}; } </script>
总结:
通过对本文学习和了解,我们可以看出JavaScript中的alert()的样式可以修改,小伙伴么如果在工作遇到的话,可以借鉴本文,希望对你有所帮助!
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