Bootstrap Datetimepicker 兼容IE8

bootstrap datetimepicker插件在IE8下显示无效，报错提示bootstrap-datetimepicker.js脚本不支持indexOf()方法

解决方案：在bootstrap-datetimepicker.js/bootstrap-datetimepicker.min.js最前面添加以下代码：

if (!Array.prototype.indexOf)  
{  
	Array.prototype.indexOf = function(elt /*, from*/)  
	{  
		var len = this.length >>> 0;

		var from = Number(arguments[1]) || 0;  
		from = (from < 0) ? Math.ceil(from) : Math.floor(from);  
		if (from < 0)  
			from += len;
		for (; from < len; from++)  
		{  
			if (from in this &&  
			this[from] === elt)  
			return from;  
		}  
		return -1;  
	};  
}