JQuery封装一个蒙层插件

(function($){
	$.extend({
				dialog:function(obj) {
					//title  标题
					//content 内容
					//cancel true|false 是否显示取消按钮
					//success 点击确定的回调函数
					obj.title = obj.title || "提示";
					//蒙层
					var modal = $("<div class='modal'></div>");
					var body = $("<div class='modal-body'></div>");
					var title = $("<p class='title'></p>").html(obj.title);
					var content = $("<div class='content'></div>").html(obj.content);
					var option = $("<div class='option'><button>确定</button><button class='cancel'>取消</button></div>");
					if(!obj.cancel) {
						option.find('button:last').remove();
					}
					option.find('button').click(function(){
						if($(this).index()==0) {
							if(obj.success) {
								obj.success();
							}
						}
						$('.modal').remove();
						$('.modal-body').remove();
					})
					body.append(title).append(content).append(option);
					//将蒙层和提示信息插入到页面body中
					$('body').append(modal).append(body);
				}
			})
})(jQuery);

        .modal {
            width: 100%;
            height: 100%;
            background-color: #333;
            opacity: 0.4;
            position: absolute;
            z-index: 9;
            left: 0;
            top: 0;
        }
        .modal-body {
            width: 250px;
            height: 150px;
            background-color: #fff;
            position: absolute;
            z-index: 10;
            left: 40%;
            margin-top: 200px;
            border-radius: 5px;
            border: 1px solid #bebebe;
            text-align: center;
        }
        
        .title {
            margin: 0;
            height: 40px;
            line-height: 40px;
            font-size: 20px;
        }
        
        .content {
            margin: 10px;
            font-size: 14px;
        }
        
        .option button {
            margin-right: 20px;
            background-color: #fff;
            border: 1px solid transparent;
            height: 30px;
            width: 80px;
            color: #fff;
            background-color: #337ab7;
        }
        
        .cancel {
            background-color: #d9534f !important;
        }

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
            <meta content="IE=edge" http-equiv="X-UA-Compatible">
           	<link rel="stylesheet" href="js/jqueryDialog/jquery.dialog.css">
            <script src="js/jquery-1.11.3.js"></script>
			<script src='js/jqueryDialog/jquery.dialog.js'></script>
          <script>
           $(function() {
			$('.btn').click(function() {
				$.dialog({
					title:'用户提示',
					content:"您确定要删除当前选择的用户类型么?",
					cancel:true,
					success:function() {
						alert('点击确定处理的事件');
					}
				});
			})
		})
                    </script>
                    <style>
                
                    </style>
    </head>
    <body>
        <button class="btn">
            弹出框
        </button>
    </body>
</html>

JQuery封装一个蒙层插件

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