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IT修真院·坑乎 | Java(后端),CSS(前端),JavaScript(前端),PM(产品经理),UI(交互设计),QA(测试),Android(安卓APP),iOS(苹果APP),OP(运维),Python(后端)日常在线问答学习平台

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click和onclick本质的区别,又有哪些联系?

0

1

事件

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

//随机颜色
function colors (){
  var col = Math.floor(Math.random()*Math.pow(255,3));
  var c16 = col.toString(16);
  return c16;
}

//开始闪
flash.onclick = function(){  
  clearInterval(time);  
  time = setInterval(function(){  
    for(var i = 0; i < div.length; i++){  
      div[i].style.background = '';  
    }  
    thethree(); 
  },1000);  
} 
//取消闪
cancel.onclick = function(){  
  clearInterval(time);  
  for(var i = 0; i < div.length; i++){  
    div[i].style.background = '';  
  }  
}

该问题已被官方收录

有限状态机

4

1

有限状态机

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

 var fsm = new StateMachine({
    init: 'solid',
    transitions: [
      { name: 'melt',     from: 'solid',  to: 'liquid' },
      { name: 'freeze',   from: 'liquid', to: 'solid'  },
      { name: 'vaporize', from: 'liquid', to: 'gas'    },
      { name: 'condense', from: 'gas',    to: 'liquid' }
    ],
    methods: {
      onMelt:     function() { console.log('I melted')    },
      onFreeze:   function() { console.log('I froze')     },
      onVaporize: function() { console.log('I vaporized') },
      onCondense: function() { console.log('I condensed') }
    }
  });

该问题已被官方收录

关于ng-router和ui-router

0

1

angular router

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

ng-router
<html>
    <head>
        <meta charset="utf-8">
        <title>AngularJS 路由实例 - 菜鸟教程</title>
    </head>
    <body ng-app='routingDemoApp'>
     
        <h2>AngularJS 路由应用</h2>
        <ul>
            <li><a href="#/">首页</a></li>
            <li><a href="#/computers">电脑</a></li>
            <li><a href="#/printers">打印机</a></li>
            <li><a href="#/blabla">其他</a></li>
        </ul>
         
        <div ng-view></div>
        <script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>
        <script src="http://apps.bdimg.com/libs/angular-route/1.3.13/angular-route.js"></script>
        <script>
            angular.module('routingDemoApp',['ngRoute'])
            .config(['$routeProvider', function($routeProvider){
                $routeProvider
                .when('/',{template:'这是首页页面'})
                .when('/computers',{template:'这是电脑分类页面'})
                .when('/printers',{template:'这是打印机页面'})
                .otherwise({redirectTo:'/'});
            }]);
        </script>
     
     
    </body>
</html>
关于ui-router
<ul>
   <li><a ui-sref="index">首页</a></li>
   <li><a ui-sref="fruit">水果</a></li>
   <li><a ui-sref="vegetable">蔬菜</a></li>
 </ul>
angular.module('myapp',['ui.router'])
.config(function($stateProvider,$urlRouterProvider){
    $urlRouterProvider.otherwise('/index');
    $stateProvider.state('fruit',{
       url:'/fruit',
       templateUrl:'fruit.html'
    })
    .state('vegetable',{
        url:'/vegetable',
        templateUrl:'vegetable.html'
    })
    .state('index',{
        url:'/index',
        template:'<h2>这是首页</h2>'
    });
});

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关于AJAX的传输，和调用后台的接口问题

1

1

Ajax 解析

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

// 获取input的数值
var ID = document.getElementById('ID');
// 第二个input的数值
var password = document.getElementsByClassName('password')[0];
var show = document.getElementById('show');
// 声明一个请求
var xhr;
// 点击事件，点击的时候获取到输入框输入的数值
function NEWbutton() {
    console.log(ID.value);
    console.log(password.value);
    if (ID.value == '') {
        show.innerHTML = '请输入账号'
        return false;
    } else if (password.value == '') {
        show.innerHTML = '请输入密码'
        return false;
    } else {
        // 请求参数
        var data = 'name=' + ID.value + '&pwd=' + password.value;
        var lin = '/carrots-admin-ajax/a/login';
        xhr = new XMLHttpRequest();
        xhr.onreadystatechange = function () {
            // 通信成功时，状态值为4
            if (xhr.readyState === 4 && xhr.status === 200) {
                 var xuan = JSON.parse(xhr.responseText);
                console.log(xuan)
                if (xuan.code == 0) {
                    location.href = 'http://dev.admin.carrots.ptteng.com/#/dashboard'
                } else {
                    show.innerHTML = xuan.message;
                }
            } 
        }
    };
    // 发送了请求，使用POST的形式进行发送
    xhr.open('POST', lin, true);
    xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
    xhr.send(data);
    return false;
}

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js在算法中涉及到自增量会影响到变量的赋值吗？

0

1

函数变量

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

var i, temp; // temp is "rval", which may not be an actual variable. 
i = 1;
temp = i;
i = i + 1;
i = temp;
var i = 1;

i = (i++, i); // 2
var i, temp; // temp is "rval", which may not be an actual variable. 
i = 1;
temp = i;
i = i + 1;
i = i;

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法官查看界面如何实现盒子编号、玩家身份和分配身份后的状态保持一致

0

1

事件控制流程语句节点操作

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

html:
<div class="main-box">
   <!--<div class="content-box">-->
            <!--<div class="content-top">-->
                <!--<div class="career"></div>-->
                <!--<div class="number"></div>-->
            <!--</div>-->
        <!--<div class="content-bottom"></div>-->
    <!--</div>-->
</div>
CSS：
.main-box {
    width: 100%;
    margin-top: .2rem;
    display: flex;
    flex-wrap: wrap;
}
.content-box {
    width: 30%;
    height: 1.9rem;
    margin: 1.5% 1.66% 0 1.66%;
}
.content-top {
    width: 100%;
    height: 1.36rem;
}
.career {
    width: 100%;
    height: 1.0rem;
    font-size: .3rem;
    color: #565656;
    background-color: #F5C97B;
    box-sizing: border-box;
    border: 2px solid #FFF;
    border-bottom: none;
    display: flex;
    justify-content: center;
    align-items: center;
}
.number {
    width: 100%;
    height: .36rem;
    font-size: .22rem;
    color: #FFF;
    background-color: #83B09A;
    box-sizing: border-box;
    border: 2px solid #FFF;
    border-top: none;
    display: flex;
    justify-content: center;
    align-items: center;
}
.content-bottom {
    width: 100%;
    height: .3rem;
    padding-top: .2rem;
    background-image: url(../image/img1.png);
    background-repeat: no-repeat;
    background-size: .3rem .3rem;
    background-position: center center;
    visibility: hidden;
}
JS:
var player = JSON.parse(sessionStorage.getItem('player'));//取出总玩家人数数组
 for (var i=0; i<player.length; i++){//遍历数组，有几个玩家就循环几次，把所有玩家都遍历出来
        var num = i + 1;//每个角色对应的号码
        var inBox = '<div class=\"content-box\">\n'+//var个变量存储写进文档的标签代码，记住要转义字符
            '<div class=\"content-top\">\n'+
            '<div class=\"career\">\n'+ player[i] +
            '</div>\n'+
            '<div class=\"number\">\n'+ num +
            '</div>\n'+
            '</div>\n'+
            '<div class=\"content-bottom\">\n'+
            '</div>\n'+
            '</div>';
        $('.main-box').append(inBox);//通过append将盒子一个一个的往文档里面装
        }

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表单数据同步问题

0

1

angular基础

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

import { ProductService } from './../Server/product.service';
import { Component, OnInit ,NgModule} from '@angular/core';
import{ FormGroup,FormControl,FormGroupName,FormsModule,ReactiveFormsModule, FormBuilder}  from "@angular/forms";

@Component({
  selector: 'app-search',
  templateUrl: './search.component.html',
  styleUrls: ['./search.component.scss']
})
@NgModule({
  imports: [
       Component,
      FormsModule,
      ReactiveFormsModule
         ],})
export class SearchComponent implements OnInit {
  
  formModel:FormGroup =new FormGroup({  
  dateRange:new FormGroup({
    from:new FormControl(),
    to:new FormControl,
  }
    
  )
 });
     cateories:string[];
  constructor(private productService:ProductService) { 
      let fb =new FormBuilder;
      this.formModel = fb.group({
        category:["-1" ]
      })
    }
    ngOnInit() {
      this.cateories = this.productService.getAllCategories();
    }
  onSubmit(){
    console.log(this.formModel.value);
  }
}

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关于有限状态机的部分，如果使用了有限状态机的话，那么我点击以后渲染出了页面文字

1

1

本地储存

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

// 读取上个页面保存的数值
var data = JSON.parse(sessionStorage.getItem('PartArr'));
console.log(data)

// 制作点击事件杀人页面第一个选项
var box2 = document.getElementsByClassName('box2')[0];
var bo = 0;
var sk = document.getElementsByClassName('show');
var sk1 = document.getElementsByClassName('show1');
// 右上角点击返回最初页面点击事件
var finish = document.getElementsByClassName('finish')[0].onclick = function () {
    window.location = './../js2-1/js2-1.html';
}
// 声明天数
// var ts;


if (sessionStorage.getItem('PartArr')) {
    sk.innerHTML = data;
}

function box1() {
    if (bo == 0) {
        box2.style.display = 'none';
        bo += 1;
    } else if (bo == 1) {
        box2.style.display = ''
        bo = 0;
    }
}
// --------------------------------------------------------
// 先声明变量，初始值
if (sessionStorage.cszt) {
    var cszt = sessionStorage.cszt;
} else {
    var cszt = 'pagetokill';
}





// 首先获取类名的DOM节点
var Boxtokill = document.getElementsByClassName('Box-to-kill')[0];
var Boxtokill1 = document.getElementsByClassName('Box-to-kill')[1];
var Boxtokill2 = document.getElementsByClassName('Box-to-kill')[2];
var Boxtokill3 = document.getElementsByClassName('Box-to-kill')[3];

// 有限状态机开始

var murderq = new StateMachine({
    // 初始状态:杀人页面
    init: cszt,
    transitions: [
        // 准备好的状态
        // 1准备杀人，2，杀人页面，3，选择杀人↓
        {
            name: 'readytokill',
            from: 'pagetokill',
            to: 'choosetokill'
        },
        // // 1死者遗言，2,选择杀人，3，发表遗言↓
        {
            name: 'thelastwords',
            form: 'choosetokill',
            to: 'publishedlastwords'
        },
        // // 1玩家发言,2发表遗言,3,玩家说话
        {
            name: 'theplayertospeak',
            form: 'publishedlastwords',
            to: 'playerstalk'
        },
        // //1全名投票，2玩家发言，3
        {
            name: 'referendum',
            form: 'playerstalk',
            to: 'vote'
        }
    ],
    // 点击之后输出的对话框
    methods: {
        onEnterChoosetokill: function () {
            // 第一个步骤判断，判断死亡的人进行渲染
            for (let kk = 0; kk < data.length; kk++) {
                if (data[kk].status === '死亡') {
                    sk[0].innerHTML = data[kk].num + '号被杀手杀死，真实身份是平民';
                    Boxtokill.style.background = 'black';
                }
            };
        },
        // 第二个步骤
        onEnterPublishedlastwords: function () {
            alert('死者发表遗言');
            Boxtokill1.style.background = 'black';
            //  重新执行一遍，保存数据
            for (let kk = 0; kk < data.length; kk++) {
                if (data[kk].status === '死亡') {
                    console.log(data[kk].num + '号被杀手杀死，真实身份是平民');
                    sk[0].innerHTML = data[kk].num + '号被杀手杀死，真实身份是平民';
                    Boxtokill.style.background = 'black';
                }
            };
        },

        onEnterPlayerstalk: function () {
            alert('玩家开始发言');
            for (let kk = 0; kk < data.length; kk++) {
                if (data[kk].status === '死亡') {
                    sk[0].innerHTML = data[kk].num + '号被杀手杀死，真实身份是平民';
                    Boxtokill.style.background = 'black';
                }
            }
            Boxtokill2.style.background = 'black';
            Boxtokill1.style.background = 'black';
        },

        onEnterVote: function () {
            // alert('开始投票');
            // window.location = './../js4投票/js4-tp.html';
            for (let kk = 0; kk < data.length; kk++) {
                if (data[kk].status === '死亡') {
                    sk[0].innerHTML = data[kk].num + '号被杀手杀死，真实身份是平民';
                    Boxtokill.style.background = 'black';
                    console.log(sk1)
                    sk1[0].innerHTML = data[kk].num + '号被投死，真实身份是' + data[kk].breed;
                    Boxtokill3.style.background = 'black';
                }
            }
            Boxtokill2.style.background = 'black';
            Boxtokill1.style.background = 'black';
            Boxtokill3.style.background = 'black';
        }
    }
});
// 第一个点击事件
Boxtokill.onclick = function () {
    switch (murderq.state) {
        case 'pagetokill':
            // 如果是这样的初始状态的情况下，就保存下来
            cszt = 'choosetokill';
            // 保存当前状态
            sessionStorage.cszt = cszt;
            console.log(cszt);
            window.location = './../js4杀手杀人/js4-3.html';
            murderq.readytokill();
            break;
        case 'choosetokill':
            alert('请按照顺序');
            break;
        case 'publishedlastwords':
            alert('请按照顺序操做');
            break;
        case 'playerstalk':
            alert('请按照顺序操作');
            break;
    }
    console.log(murderq.state)
}
// 第二个点击事件
Boxtokill1.onclick = function () {
    switch (murderq.state) {
        case 'pagetokill':
            alert('请按照顺序操作');
            break;
        case 'choosetokill':
            murderq.thelastwords();
            break;
        case 'publishedlastwords':
            alert('请按照顺序');
            // 保存当前状态
            sessionStorage.cszt = murderq.state;
            break;
        case 'playerstalk':
            alert('请按照顺序操作');
            break;
    }
    console.log(murderq.state);
}
console.log(murderq.state)
// 第三个点击事件
Boxtokill2.onclick = function () {
    switch (murderq.state) {
        case 'pagetokill':
            alert('请按照顺序');
            break;
        case 'publishedlastwords':
            murderq.theplayertospeak();
            sessionStorage.cszt = murderq.state;
            break;
        case 'choosetokill':
            alert('请按照顺序操作');
            break;
        case 'playerstalk':
            alert('请按照顺序操作');
            break;
    }
    console.log(murderq.state)
}

// 第四个点击事件
Boxtokill3.onclick = function () {
    switch (murderq.state) {
        case 'pagetokill':
            alert('请按照顺序');
            break;
        case 'playerstalk':
        murderq.referendum();
        alert('开始投票');
        window.location = './../js4投票/js4-tp.html';
            sessionStorage.cszt = murderq.state;
            break;
    }
}
console.log(murderq.state);

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如何在vue组件中写sass

0

1

其他插件

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 图片

class="cursor-pointer"> 文本

该问题已被官方收录

微信小程序表单组件中的picker普通选择器选项出不来

1

1

小程序界面构建小程序语言基础

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

<view class='main'>
  <view class='title test'>
    <text>最适合你的职业推荐</text>
  </view>
  <view class='list test'>
  <picker bindchange='educationChange' value='{{index}}' range='{{education}}'>
    <view class='picker'>
      <text decode='{{true}}'>学  历 : {{education[index]}}</text>
    </view>
  </picker>
  </view>
  <view class='list test'>
  <picker bindchange='sexChange' value='{{index}}' range='{{sex}}'>
    <view class='picker'>
      <text decode='{{true}}'>性  别 :{{sex[index]}}</text>
    </view>
  </picker>
  </view>
  <view class='list test'>
    <text decode='{{true}}'>年  龄 :</text>
    <text>{{age}}</text>
  </view>
  <view class='list test'>
    <text decode='{[true}}'>基  础 :</text>
    <text>{{base}}</text>
  </view>
  <view class='list test'>
    <text decode='{{true}}'>专  业 :</text>
    <text>{{profession}}</text>
  </view>
  <view class='list test'>
    <text decode='{{true}}'>逻  辑 :</text>
    <text>{{logic}}</text>
  </view>
</view>

Page({

  /**
   * 页面的初始数据
   */
  data: {
    education: [
      '博士',
      '硕士',
      '本科',
      '大专',
      '高中',
      '初中以下'
    ],
  },
  educationChange: function(e) {
    this.setData({
      index: e.detail.value
    })
  },
  sex: [
    '男',
    '女'
  ],
  sexChange: function(e) {
    this.setData({
      index: e.detail.value
    })
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    
  },

  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady: function () {
    
  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow: function () {
    
  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide: function () {
    
  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload: function () {
    
  },

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh: function () {
    
  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom: function () {
    
  },

  /**
   * 用户点击右上角分享
   */
  onShareAppMessage: function () {
    
  }
})

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