enter | 易学教程

让IE6支持png24透明/半透明的方法

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IE6下PNG背景透明或者图片透明一直让人很伤脑筋，以前的解决办法也不尽完好。最近在项目中，发现了一种几乎完美的解决办法。用JS在IE6下面实现png图和背景PNG透明。不敢独享，写下这篇文章，也好为自己以后查阅，利人利己啊。并且，可以解决a:hover 背景png的问题。下面开始，三步即可搞定IE6下PNG透明问题。第一步：下载JS文件DD_belatedPNG_0.0.8a.js 下载地址： http://dillerdesign.com/experiment/DD_belatedPNG/DD_belatedPNG_0.0.8a.js 或： http://dillerdesign.com/experiment/DD_belatedPNG/DD_belatedPNG_0.0.8a-min.js 第二步：引用JS文件 /* EXAMPLE */ DD_belatedPNG.fix('.enter,.enter a,.enter a:hover'); /* string argument can be any CSS selector */ /* .png_bg example is unnecessary */ /* change it to what suits you! */ PS:灰色文字部分【'.enter,.enter a,.enter a:hover'】

mysql8 实操语句及问题

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1 WIN+r：输入cmd， enter；d: ， enter；cd mysql-8.0.18-winx64\bin， enter； 2 登陆：mysql -u root -p ，enter；密码输入，enter； 3 创建数据库：create database mmall; 4 使用数据库：use mmall; 5 给数据库创建用户（%所有远程地址的用户）：create user 'imooc'@'%' identified by 'imooc'; 报错ERROR 1396 (HY000): Operation CREATE USER failed for 'imooc'@'%'；解决方法：先删除再创建。drop user 'imooc'@'%' identified by 'imooc'; create user 'imooc'@'%' identified by 'imooc'; 6 给创建的用户（%所有远程地址的用户）赋增删改查权限： grant all privileges on mmall.* to 'imooc'@'%'; 7 flush privileges; 8 用navicat for mysql 远程登陆：服务器ip；用户imooc；密码:imooc; 连接测试报错1251；解决方法：修改加密规则mysql_native_password

How to detect pressing Enter on keyboard using jQuery?

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问题 I would like to detect whether the user has pressed Enter using jQuery. How is this possible? Does it require a plugin? EDIT: It looks like I need to use the keypress() method. I wanted to know if anyone knows if there are browser issues with that command - like are there any browser compatibility issues I should know about? 回答1: The whole point of jQuery is that you don't have to worry about browser differences. I am pretty sure you can safely go with enter being 13 in all browsers. So with

How to cause button click event when enter is pressed in an hta application

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问题 I have a script that allows me to hide a folder on my pc (using batch file). I've just implemented an hta application to it for the password so It's more seccure. Now the problem I'm having is that if I want to press enter to submit the form on the hta application, it just clears the password field and does nothing. I would like it to have the same effect as if I were to push the OK button. This is the hta part of my batch file: :HTA <html> <head> <title>Password Entry</title> <hta

Capture the enter key cross-browser, my solution isn't working

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问题 I have what I thought was a cross-browser solution to capturing the enter key in a chat script I'm making, here it is: nn=(document.layers)?true:false; ie=(document.all)?true:false; function keyDown(e) { var evt=(e)?e:(window.event)?window.event:null; if(evt){ var key=(evt.charCode)?evt.charCode: ((evt.keyCode)?evt.keyCode:((evt.which)?evt.which:0)); if(key=="13") document.getElementById('chatEnter').submit(); } } document.onkeydown=keyDown; if(nn) document.captureEvents(Event.KEYDOWN); I got

jquery autocomplete - mouse below text box a causes selection after menu is shown

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问题 I have a jquery autocomplete text box at the top of a page. Typically, a user will click in the text box to give it focus, move the mouse away, and then start typing. If the user moves the mouse below the autocomplete, their mouse location can inadvertently select a suggestion, even though they didn't do anything. When this happens and the user hits the enter key, the autocomplete uses their inadvertent selection. This is a major problem due to the location of my autocomplete... it happens

Listen to ENTER key in Android

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问题 Here is my code: public class CaptureENTER extends Activity implements OnKeyListener{ /* on create and other stuff in here*/ @Override public boolean onKey(View v, int keyCode, KeyEvent event) { if ((event.getAction() == KeyEvent.ACTION_DOWN) && (keyCode == KeyEvent.KEYCODE_ENTER)) { Toast.makeText(LiVoiceActivity.this, "YOU CLICKED ENTER KEY", Toast.LENGTH_LONG).show(); } return false; } I don't know what is going on, but when I press the ENTER key in my keyboard (I am using the Android

Android execute function after pressing “Enter” for EditText

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问题 I have been following the official Android tutorials and somehow am having a problem with this very simple example to execute a function after pressing "Enter" for an EditText. I understand what I'm supposed to do and seem to have everything setup properly, but Eclipse is complaining with this line: edittext.setOnKeyListener(new OnKeyListener() { It underlines setOnKeyListener with the error: The method setOnKeyListener(View.OnKeyListener) in the type View is not applicable for the arguments

登录作业——使用装饰器

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#_*_coding:utf-8_*_#作者：王佃元#日期：2019/12/25'''需求1.使用文件保存用户名及密码2.程序启动后可以看到三个页面3.用户选择任一界面可进入，如果没有登录，提示用户输入1：京东 home page 只能使用京东的登录2：金融 finance page 只能使用微信登录3：书籍 book page 两种皆可以不同的登录页面调用同一个登录方法打印登录页面用户选择要登录的页面，如果是1则调用'home page'、如果是2则调用'finance page'（循环打印pages列表，获取用户输入，根据用户输入调用方法）登录之后进行页面切换无需再次登录（页面切换首先进行是否登录验证，如果已登录，则显示切换页面，否则提示登录）装饰器：1.为什么装饰器要传函数进来，因为装饰器是对函数功能的扩展，所以要传函数进来并执行2.为什么要返回装饰器内嵌函数，因为不返回内嵌函数无法进行内嵌函数的执行'''# print('welcome to jingdong!')pages = ['home page', 'finance page', 'book page']login_status = Falsedef login_decorator(login): def login_page(*args): global login_status for page in

python 中super方法的调用

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参考https://www.runoob.com/python/python-func-super.html 加以解释 class FooParent(object): def __init__(self): self.parent = "I am the parent." print('Parent') def bar(self, message): print("%s from Parent" % message) class FooChild(FooParent): def __init__(self): super(FooChild, self).__init__() print('Child') def bar(self,message): # 调用父类的bar方法 super(FooChild, self).bar(message) print('Child bar function') # 打印父类的parent print(self.parent) if __name__ == '__main__': fooChild = FooChild() # fooChild.bar('HelloWorld') # 不实例化调用 # FooChild().bar('Hello World') 结果子类和父类实例化所答打印的 Parent Child 父类的bar方法打印

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