自定义弹出框alert

本文主要是介绍自定义弹出框alert，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

有时候由于某种需求，我们需要改变弹出框的样式。
例子一：

js代码如下：

function alert(txt){document.write ('<table width="500px" height="170px" border="0" align="center"cellpadding="0" cellspacing="1" bgcolor="#CCCCCC">');document.write (' <tr>');document.write (' <td align="center" bgcolor="#F3AA33" height="25px"><span >用户信息</span></td>');document.write (' </tr>');document.write (' <tr>');document.write (' <td bgcolor="#FFFFFF" height="100px" style=" font­size:13px;color:rgb(27,111,181); font­family:Verdana;">'+txt+'</td>');document.write (' </tr>');document.write (' <tr>');document.write(' <td align="right" height="25px">');document.write (' <input type="button" name="Submit2" style="width:50px;margin-right:20px;" value="确定"οnclick="window.close()"/></td>');document.write (' </tr>');document.write ('</table>');}  

例子二：

可以正常确定返回。

js代码如下：

window.alert = function(str) 
{ 
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"; 
//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)"; 
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 = "#ff0000"; 
alertFram.style.textAlign = "center"; 
alertFram.style.lineHeight = "150px"; 
alertFram.style.zIndex = "300"; 
<pre name="code" class="html">strHtml=\"<p style=\"display:none;\">hello world!</p>\";
strHtml += "<ul style=\"list-style:none;margin:0px;padding:0px;width:100%\">\n"; 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;\">[自定义提示]</li>\n"; 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;\">"+str+"</li>\n"; 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\" οnclick=\"doOk()\" /></li>\n"; strHtml += "</ul>\n"; alertFram.innerHTML = strHtml; document.body.appendChild(alertFram); document.body.appendChild(shield); var ad = setInterval("doAlpha()",5); this.doOk = function(){ alertFram.style.display = "none"; shield.style.display = "none"; } alertFram.focus(); document.body.onselectstart = function(){return false;}; }

例子三：

js代码如下：

 window.alert = function (sid) {// var shield = document.createElement("DIV");//shield.id = "shield";//shield.style.position = "absolute";//shield.style.left = "0";//shield.style.top = "0";//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)"; var alertFram = document.createElement("DIV");//alertFram.className = "box-content";alertFram.id = "alertFram";alertFram.style.position = "absolute";alertFram.style.width = "80%";alertFram.style.minWidth = "970px";alertFram.style.maxWidth = "1190pxpx";alertFram.style.right = "1.7%";alertFram.style.top = "22%";alertFram.style.marginLeft = "-225px";alertFram.style.marginLeft = "auto";alertFram.style.marginRight = "auto";alertFram.style.marginTop = "-75px";//alertFram.style.width = "450px";alertFram.style.height = "auto";alertFram.style.background = "#ff0000";alertFram.style.textAlign = "center";//alertFram.style.lineHeight = "150px";alertFram.style.zIndex = "300";strHtml = "<ul style=\"list-style:none;margin:0px;padding:0px;width:100%;\">\n";strHtml += " <li style=\"background:#ff8585;text-align:left;padding-left:20px;font-size:14px;font-weight:bold;height:30px;line-height:30px;text-align:center;border:1px solid #F9CADE;\">用户 " + sid + " 详细信息</li>\n";//每个用户的信息strHtml += " <li style=\"background:#fff;text-align:center;font-size:12px;height:auto;line-height:auto;border-left:1px solid #F9CADE;border-right:1px solid #F9CADE;\"><table class=\"alerttable table table-striped table-bordered responsive\" οnlοad=\"getUserinfo(sid);\"><thead style=\"background-color:#e8e8e8;\"><tr><th>sid</th><th>password</th><th>phone</th><th>phone_state</th><th>fullname</th><th>nickname</th><th>citizen_id</th><th>gender</th><th>birth_year</th><th>career</th><th>company</th><th>job_title</th><th>education</th><th>school</th><th>files</th></tr></thead><tbody></tbody></table></li>\n";strHtml += " <li style=\"background:#fff;text-align:center;font-weight:bold;border-left:1px solid #F9CADE;border-right:1px solid #F9CADE;\"><input type=\"button\" style=\"margin:10px auto;width:auto;height:30px;line-height:25px;color:white;background-color:rgb(40,160,230);\" value=\" 查看完毕 请点我返回 \" οnclick=\"doOk()\" /></li>\n";               strHtml += "</ul>\n";alertFram.innerHTML = strHtml;document.body.appendChild(alertFram);//document.body.appendChild(shield);//确定关闭函数this.doOk = function () {alertFram.style.display = "none";//shield.style.display = "none";}alertFram.focus();document.body.onselectstart = function () { return false; };//动态构建表格，调用后台填充数据(function getUserinfo(sid) {var data = 'sid=' + sid + '&func=getUserinfo';$.ajax({url: "ajax/func.php",type: "POST",dataType: 'json',data: data,success: function (data) {if (data['r']) {var $tbody = $('.alerttable tbody');var tr = $('<tr></tr>');if (data['r']) {for (info in data['r'].info) {var tds = "";tds += $('<td>' + data['r'].info[info] + '</td>').appendTo(tr);}tds += $('<td><a sid="' + data['r'].info.sid + '" class = "files">' + data['r'].files.length + '</a></td>').appendTo(tr);$tbody.html(tr);                                  }} else {alert('信息不存在！');}}});})(sid);}//函数：查看大图function looking(src) {window.open(src, "_blank", "toolbar=no,scrollbars=no,menubar=no");//打开一个新的窗口，在新的窗口显示图片的本来大小}

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