prompt

Javascript Prompt Validation?

☆樱花仙子☆ 提交于 2019-12-02 19:34:39
问题 I want to prompt the user to enter a sport (baseball, football, soccer, or track). Let's say I enter "Golf". How do I get it to keep asking me to enter a sport until I enter one of the valid sports? The sport determines what field they play on. Below is my code. var sport = prompt("What sport do you play? (Baseball, Football, Soccer, or Track)").toLowerCase (); switch (sport) { case "baseball": field = "Field 1"; break; case "football": field = "Field 2"; break; case "soccer": field = "Field

初步了解MYSQL

为君一笑 提交于 2019-12-02 18:42:19
MYSQL 从哪里来? 1.MYSQL 数据库是由瑞典公司MYSQL AB 公司研发,后被ORACLE 公司收购。 2.MYSQL 是开源关系型数据库,所以可以免费下载 3.MYSQL 有社区版和企业版 如 何启动MYSQL? 1. 计算机->管理->启动MYSQL 2. 配置环境变量与用户变量 cmd->net start mysql 如何关闭MYSQL? 1. 计算机->管理->关闭 MYSQL 2. Cmd->net stop mysql 如何进 入MYSQL? 在命令行任意目录下输入 mysql -u+用户名 -p+密码名 如何退出MYSQL? 1. quit 2. exit 3. \q 何为提示符? 每个指令的默认字符串,默认初始字符串为 mysql> 提示符的作用:提示用户信息\u,当前所在数据库\d,当前日期\D,当前服务器名称\h,当前端口\p等等。 如何使用提示符 prompt? 例子:mysql>prompt \u@\h \d> PROMPT set to ‘\u@\h \d>’ root@localhost(none)> (用户名@服务器名称(数据库名称)>) MYSQL常用命令 SELECT VESION(); 显示服务器版本 SELECT NOW(); 显示当前日期时间 SELECT USER(); 显示当前用户; MYSQL 语句的规范

Code challenge: Bash prompt path shortener

夙愿已清 提交于 2019-12-02 14:56:02
I implemented a prompt path shortener for bash to be included in the PS1 environment variable, which shortens the working directory into something more compact but still descriptive. I'm curious what other ideas may exist. Here's the challenge: Create a bash function _dir_chomp which can be included into PS1 like this (line breaks inserted for readability): PS1='\[\033[01;32m\]\u@\h\[\033[01;34m\] $( _dir_chomp "$(pwd)" 20 )\[\033[01;37m\]$(parse_git_branch)\[\033[01;34m\] \$\[\033[00m\] ' with "20" being the parameter for the maximum length as soft limit. These are the examples: /usr/portage

Java jar-Archive tool - Set path for folder with content

夙愿已清 提交于 2019-12-02 14:41:31
问题 When I use this command: echo C:\Program Files\Java\jdk1.7.0_07\bin jar -cf C:\file\file.jar C:\data\ in the CMD for the jar-Archive tool, it creates the .jar called "file.jar" in C:\file\ , but it doesn't add the files from the folder C:\data , it creates an archive with the folder C: -> data -> files (in this case text.txt). How can I set the path for the folder with the content in it? I only want the files in the folder C:\data\ in my archive. How can I do this? Thanks, DigitalClark . btw.

Don't make me manually abort a LaTeX compile when there's an error

喜欢而已 提交于 2019-12-02 14:00:39
As suggested here , latexmk is a handy way to continually compile your document whenever the source changes. But often when you're working on a document you'll end up with errors and then latex will panic and wait for user input before continuing. That can get very annoying, especially recently when I hacked up something to compile latex directly from an etherpad document, which saves continuously as you type. Is there a setting for latex or latexmk to make it just abort with an error message if it can't compile? Or, if necessary, how would I set up some kind of Expect script to auto-dismiss

Javascript - How to save prompt input into array

ε祈祈猫儿з 提交于 2019-12-02 13:11:54
问题 I`m having some issue with Javascript. We just started to study it a couple weeks ago and I have to do a work for class: Need to do a prompt. get 10 numbers input (10 grades) from the user. put the numbers into an array and then do some functions with it. My question is how do I save the input in the array? We learned about all the loops already. Tried to search online but didn`t found an answer. I would love if somebody could explain how I do it. Thank you very much. 回答1: Just try to ask

Javascript, about infinite looping prompt and stopping that loop

天涯浪子 提交于 2019-12-02 12:43:10
I'm new to javascript, so that's my back story :) This code keeps crashing my browser, and it won't let me cancel the prompt if I don't cancel on the first attempt, whether I enter a number or not...Anyway, even the game won't work, which is to just to get to a point where the secret number is the person's guessing number. For cancelling the prompt, I even tried if(answer===null||answer===false||answer==="null") break; but it won't work. Can anybody help? Thanks. Here is my code: <script> var secret_number=Math.floor((Math.random() * 10) + 1); var answer=prompt("Enter a number you want to try"

Javascript Prompt Validation?

[亡魂溺海] 提交于 2019-12-02 11:31:13
I want to prompt the user to enter a sport (baseball, football, soccer, or track). Let's say I enter "Golf". How do I get it to keep asking me to enter a sport until I enter one of the valid sports? The sport determines what field they play on. Below is my code. var sport = prompt("What sport do you play? (Baseball, Football, Soccer, or Track)").toLowerCase (); switch (sport) { case "baseball": field = "Field 1"; break; case "football": field = "Field 2"; break; case "soccer": field = "Field 3"; break; case "track": field = "Field 4"; break; default: alert("Please enter a valid sport"); } loop

Any real difference between window.prompt and prompt?

不问归期 提交于 2019-12-02 09:15:29
问题 Just out of curiosity is there any difference between window.prompt and prompt in JavaScript. For one of the answers to my exam questions the teacher uses var yourName = window.prompt("Please enter your first name here\n"); and I used var yourName = prompt("Please enter your first name here\n"); It is a written exam so i felt it wouldn't make much difference. 回答1: Usually yes, window.prompt === prompt . Yet it does depend on your scope, someone might have declared window or prompt variables

Change format and text displayed with JavaScript prompt()?

妖精的绣舞 提交于 2019-12-02 06:49:43
I'm using JavaScript's prompt() function. var favorite = prompt('What is your favorite color?', 'RED'); I'm using IE 7 and the prompt box that opens has a title bar that says : 'Explorer User Prompt' and further text that says 'Script Prompt:' Then beneath this is my text : 'What is your favorite color?' Also the 'OK' and 'Cancel' buttons appear in the far right side of the prompt box and the text entry box appears at the very bottom of the dialogue. Is there any way to change the title bar, remove the text 'Script Prompt', and put the OK and cancel buttons beneath the text entry box? No I don