- ArthurSlog
- SLog-42
- Year·1
- Guangzhou·China
- Aug 19th 2018
- GitHub
- 掘金主页
- 简书主页
- segmentfault
从业之路不同 机缘也不同 人生轨迹由机缘组成 想要有什么样的机缘 也就明白了自己要走的路
开发环境MacOS(High Sierra 10.13.5)
需要的信息和信息源:
- css 元素框的类型
- HTML Demo: <img>
- CSS Demo: border
- CSS Demo: border-radius
- CSS Demo: padding
- CSS Demo: margin
- CSS Demo: width
- CSS Demo: height
- CSS Demo: object-fit
- 样式文件预编译器Sass的安装和使用
- 样式文件预编译器Sass指导手册
- HTTP概述
- HTTP
- 互联网是如何工作的
- 万维网是如何工作的
- 统一资源定位符(URL)
- 什么是超链接
- 创建超链接
- AJAX是异步的JavaScript和XML(Asynchronous JavaScript And XML)
- XMLHttpRequest
- Using files from web applications
开始编码
- 本篇实现 登陆后,显示默认头像
- 参考HTML Demo: <img>,我们对 html 文件进行更新
client/app.html
<!DOCTYPE html>
<html><head><meta charset="utf-8"><link rel="stylesheet" type="text/css" href="./css/style.css"><!-- 开发环境版本,包含了有帮助的命令行警告 --><script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script><title>signin_ArthurSlog</title>
</head><body><div id="signup-container"><template class="container" v-if="pagestate === '0'"><div>This is index's page by ArthurSlog</div><br><button v-on:click="signin_index">Signin</button><br><button v-on:click="signup_index">Signup</button></template><template id="Signin" v-else-if="pagestate === '1'"><div>This is signin's page by ArthurSlog</div><p>Singin</p><form id="form1" v-on:submit.prevent="signin"><br><div>Account: {{ name_signin }}<br><input type="text" v-model="name_signin" placeholder="username"></div><br><br><div>Password: {{ password_signin }}<br><input type="text" v-model="password_signin" placeholder="password"></div><br><input type="submit" value="登陆"></form><br><button v-on:click="return_index">ReturnIndex</button></template><template id="Signup" v-else-if="pagestate === '2'"><div>This is signup's page by ArthurSlog</div><p>Singup</p><form id="form2" v-on:submit.prevent="addUser"><br><div>Account: {{ name }}<br><input type="text" v-model="name" placeholder="username"></div><br><br><div>Password: {{ password }}<br><input type="text" v-model="password" placeholder="password"></div><br><br><div>Again Password: {{ repassword }}<br><input type="text" v-model="repassword" placeholder="repassword"></div><br><br><div>First Name: {{ firstname }}<br><input type="text" v-model="firstname" placeholder="firstname"></div><br><br><div>Last Name: {{ lastname }}<br><input type="text" v-model="lastname" placeholder="lastname"></div><br><br><div>Birthday: {{ birthday }}<br><input type="text" v-model="birthday" placeholder="2000/08/08"></div><br><br><div><span>Sex: {{ currentSex }}</span><br><input type="radio" id="sex" value="male" v-model="currentSex"><label for="sex">male</label><br><input type="radio" id="sex" value="female" v-model="currentSex"><label for="sex">female</label></div><br><br><div><span>Age: {{ currentAge }}</span><br><select v-model="currentAge" id="age"><option disabled value="">Select</option><option v-for="age in ages">{{ age }}</option></select></div><br><br><div>Wechart: {{ wechart }}<br><input type="text" v-model="wechart" placeholder="wechart's name"></div><br><br><div>QQ: {{ qq }}<br><input type="text" v-model="qq" placeholder="12345678"></div><br><br><div>Email: {{ email }}<br><input type="text" v-model="email" placeholder="12345678@qq.com"></div><br><br><div>Contury: {{ contury }}<br><input type="text" v-model="contury" placeholder="China"></div><br><br><div>Address: {{ address }}<br><input type="text" v-model="address" placeholder="Guangzhou"></div><br><br><div>Phone: {{ phone }}<br><input type="text" v-model="phone" placeholder="138********"></div><br><br><div>Websize: {{ websize }}<br><input type="text" v-model="websize" placeholder="xxx.com"></div><br><br><div>Github: {{ github }}<br><input type="text" v-model="github" placeholder="Github's URl"></div><br><br><div>Bio: {{ bio }}<br><input type="text" v-model="bio" placeholder="This is the world~"></div><br><br><input type="submit" value="完成注册"></form><button v-on:click="addUser">addUser</button><br><button v-on:click="return_index">ReturnIndex</button><br></template><template id="returnResult" v-else-if="pagestate === '3'"><div><img id="ArthurSlog_icon" src="/image/ArthurSlog.png" alt="ArthurSlog_icon" /></div><div id="signinResult"><div v-for="(value, key) in commits">{{ key }}: {{ value }}</div></div></template></div><script src="./js/signup.js"></script>
</body></html>
- 其中更新的部分如下:
client/app.html
<div><img id="ArthurSlog_icon" src="/image/ArthurSlog.png" alt="ArthurSlog_icon" />
</div>
- 首先给 img 上个 id 标记,标记为 "ArthurSlog_icon",用于接下来样式的调整
- 接下来,切换到 client 文件夹路径下
cd client
- 建立一个新的文件夹 image,来存放图片文件
mkdir image
- 下载图片 ArthurSlog.png 到 image 文件夹下
- 现在,打开浏览器,输入 127.0.0.1:3000/app.html,点击 signin 按钮
- 输入账号:ArthurSlog 密码:ArthurSlog,点击登陆,正常执行下,默认图片会显示出来
- 接下来,我们需要来调整图片的 布局和定位
- 打开 scss 文件
clinet/css/style.scss
$font-stack: Helvetica, sans-serif;
$primary-color: #ff0000;body {font: 100% $font-stack;color: $primary-color;
}#signup-container {display: flex;justify-content: center;align-items: center;flex-direction: column;
}#signinResult {display: flex;flex-direction: column;
}#signinResult > div {background-color: #f1f1f1;width: 300px;margin: 5px;text-align: left;line-height: 50px;
}#ArthurSlog_icon {object-position: 50% 50%;width: 300px;object-fit: contain;border: 1px solid rgb(171, 255, 216);border-radius: 30px;background-color: silver;
}
- 上面的代码参考 w3schools 的 css文档手册,我们使用 Flexbox 属性来定位和布局,另外参考CSS Demo: object-position,我们使用 object-position 属性来让图片居中
- 其中新增的代码如下
#ArthurSlog_icon {object-position: 50% 50%;width: 300px;object-fit: contain;border: 1px solid rgb(171, 255, 216);border-radius: 30px;background-color: silver;
}
- 现在,切换到 css 文件夹路径下
cd client/css/
- 现在,我们要使用 Sass预编译器(其实就是一段代码,一个程序),来把 sass 文件转换为 css 文件
- 根据 Sass官网的使用说明,"sass sass文件名 css文件名"
sass style.scss style.css
- 现在,scss 文件就转换为 css 文件了,转换的结果如下:
client/css/style.css
body {font: 100% Helvetica, sans-serif;color: #ff0000;
}#signup-container {display: flex;justify-content: center;align-items: center;flex-direction: column;
}#signinResult {display: flex;flex-direction: column;
}#signinResult > div {background-color: #f1f1f1;width: 300px;margin: 5px;text-align: left;line-height: 50px;
}#ArthurSlog_icon {object-position: 50% 50%;width: 300px;object-fit: contain;border: 1px solid #abffd8;border-radius: 30px;background-color: silver;
}/*# sourceMappingURL=style.css.map */
- 现在,打开浏览器,输入 127.0.0.1:3000/app.html,点击 signin 按钮
- 输入账号:ArthurSlog 密码:ArthurSlog,点击登陆,正常执行下,默认图片会显示出来,并居中显示
- 至此,我们对 默认头像 进行了布局和定位。
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