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jquery form元素操作

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jQuery获取Select选择的Text和Value: 语法解释： 1. $("#select_id").change(function(){//code...}); //为Select添加事件，当选择其中一项时触发 2. var checkText=$("#select_id").find("option:selected").text(); //获取Select选择的Text 3. var checkValue=$("#select_id").val(); //获取Select选择的Value 4. var checkIndex=$("#select_id ").get(0).selectedIndex; //获取Select选择的索引值 5. var maxIndex=$("#select_id option:last").attr("index"); //获取Select最大的索引值 jQuery设置Select选择的Text和Value: 语法解释： 1. $("#select_id ").get(0).selectedIndex=1; //设置Select索引值为1的项选中 2. $("#select_id ").val(4); //设置Select的Value值为4的项选中 3. $("#select_id option[text='jQuery']").attr(

Bad cursor in select/option, IE

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I have a problem with bad cursor in options when the text is under that. Normally, the option uses "default" cursor, but when eg. the paragraph is under option, in IE I see "text" cursor. Code: <form> <select> <option value=a selected="selected">First <option value=b>Second <option value=c>Third <option value=c>Fourth </select> <p>text</p> </form> It´s in IE11 and I think the older ones makes the same. I tried to set position: relative and z-index to select, option and paragraph, set cursor with important to select, option, but no solution, situation is the same. Any idea? IE does not honour

Create <option> on the fly with jQuery

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I'd like to build s on the fly in a box based on an AJAX response; i.e. if the responseText is 3, I'd like to build 3 options: <option value="1">1</option> <option value="2">2</option> <option value="3">3</option> The following piece of code is working: $("#PAG_PLACEMENT").change(function(){ $.ajax({ type: "post", url: "untitled.asp", data: "iLanguage=1&iPlacement="+$("#PAG_PLACEMENT").val(), success: function(responseText){ //alert(parseInt(responseText)); opts = parseInt(responseText); var routeSelect = $("#PAG_POSITION").get(0); routeSelect.options.length = 0; //reset to zero length for(var

python配置文件

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python有两种配置文件,file.ini和file.json 一、ini文件如下: db_config.ini [baseconf] host=127.0.0.1 port=3306 user=root password=root db_name=evaluting_sys [concurrent] processor=20 对ini文件进行读写: import ConfigParser config = ConfigParser.ConfigParser() conf_file = open("db_config.ini") config.readfp(conf_file) print config.get("baseconf","port") #----------------------------------------------------------------------- config.set("baseconf","port","11223") file_write = open("db_config.ini","w") 16 config.write(file_write) file_write.close() import configparser import os root_dir = os.path.dirname(os.path.abspath(

python3 主机实时监控系统

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一、登录界面 login.html <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <meta http-equiv="Pragma" content="no-cache"> <meta http-equiv="Cache-Control" content="no-cache"> <meta http-equiv="Expires" content="0"> <title>管理员登录</title> <link rel="icon" type="image/x-icon" href="{{ url_for('static', filename='favicon.ico') }}"> <link href='../static/login.css' rel="stylesheet" type="text/css" /> <script type="text/javascript"> function login_(){ var user = document.getElementById("username"); if (user.value==''){ alert("用户名为空!"); return false; } var pass

Invalid Debug Option Build Error Visual Studio for MAC

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I am getting following error while building .NET Core MVC App. Projects/MVCCoreTest/MVCCoreTest/CSC: Error CS1902: Invalid debug option portable'. Valid options are full' or `pdbonly' (CS1902) (MVCCoreTest) What does this mean and where do i set those valid options ? I should clarify that if you create the project with VS for Mac you shouldn't have this issue, but if you clone it for example and was created in Windows then probably you will get this problem. I resolved the error by removing the Nuget packages related with Roslyn compiler: <package id="Microsoft.CodeDom.Providers

select标签新增选项option、响应onchange事件

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【问题描述】（1）下拉菜单选中的食物在最下面显示；（2）在添加食物的输入框中输入文本，点击“添加选项”按钮将文本添加到下拉菜单的选项中。【解决】（1） <select id="food_selection" onchange="func(this.value)"> <option value="汉堡">汉堡</option> <option value="意大利面">意大利面</option> </select> <p id="text1">你选择的食物：汉堡</p> function func(val){ text1=document.getElementById("text1"); text1.innerHTML = "你选择的食物：" + val; } (2) <input id="new_option" type="text"></input> <input type="button" value="添加选项" onclick="add_option(new_option.value)"/> function add_option(val){ var op = new Option(val); food_selection.add(op); } 来源： https://www.cnblogs.com/OliverW/p/11695124.html

Rsync命令参数详解

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Rsync命令参数详解在对rsync服务器配置结束以后，下一步就需要在客户端发出rsync命令来实现将服务器端的文件备份到客户端来。rsync是一个功能非常强大的工具，其命令也有很多功能特色选项，我们下面就对它的选项一一进行分析说明。 Rsync的命令格式可以为以下六种： 1 rsync [OPTION]... SRC DEST 2 rsync [OPTION]... SRC [USER@]HOST:DEST 3 rsync [OPTION]... [USER@]HOST:SRC DEST 4 rsync [OPTION]... [USER@]HOST::SRC DEST 5 rsync [OPTION]... SRC [USER@]HOST::DEST 6 rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST] 对应于以上六种命令格式，rsync有六种不同的工作模式：　　1)拷贝本地文件。当SRC和DES路径信息都不包含有单个冒号”:”分隔符时就启动这种工作模式。如：rsync -a /data /backup 　　2)使用一个远程shell程序(如rsh、ssh)来实现将本地机器的内容拷贝到远程机器。当DST路径地址包含单个冒号”:”分隔符时启动该模式。如：rsync -avz *.c foo:src 　　3

Bold part of an option in a drop down list

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问题 Is there a way to bold only part of the text in a drop down list option or is this not possible? I know that you can style the entire option with CSS, but that is not what I am looking for. And HTML inside of an option tag does not render. Here would be an example of a drop down list item: SomeID - Description of ID 回答1: You cannot do this. The most likely solution you'll find "out there" would be to add a surrounding span with hard coded style, but neither IE (7) nor Firefox (3.0.12) honor

antd不想写那么多option怎么办

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做项目的时候发现如果下拉列表选项多的时候会写很多的 Option ，但是用到下拉列表的地方又超级多。所以自己写了一个方法，哪需要就放到哪。记录一下方法。留待以后用 selectStreetIdChange = (obj) => { const children = []; for ( let i = 0; i < obj.length; i ) { children.push( <Option key={obj[i].id.toString()}>{obj[i].name}</Option>); } return children } 这方法的调用 <Select placeholder="充值类型" onChange={ this .handleSelectStreetIdChange}> { this .selectStreetIdChange( this .state.data)} </Select> 和后台交互的时候千万要留意他这个 key 的类型更多专业前端知识，请上【猿2048】www.mk2048.com 来源： https://blog.csdn.net/whiteGay/article/details/102556517

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