angular6开发steps步骤条组件

1.先展示步骤条效果

2.使用angular命令快速创建组件

ng g c component/steps

创建的组件在component文件夹下面

打开steps.component.ts文件，可以看到selector的值是app-steps

import { Component, OnInit} from '@angular/core';

@Component({
  selector: 'app-steps',
  templateUrl: './steps.component.html',
  styleUrls: ['./steps.component.css']
})
export class StepsComponent implements OnInit {
  constructor() { }
  ngOnInit() { }
}

3.代码

steps.component.html

<div class="steps">
  <ul class="lineUl">
    <li *ngFor="let item of stepsData; let i=index" [ngClass]="{'liWidth': i+1 == stepsData.length}">
      <div class="stepsIcon">
        <div class="radioSelect radioSelectDisabled" [ngClass]="{'radioSelectDisabled': i+1>active}"></div>
        <div *ngIf="i+1 != stepsData.length" class="line" [ngClass]="{'lineDefaule': i+2>active}">
          <span *ngIf="!!item.tips">{{item.tips}}</span>
        </div>
      </div>
    </li>
  </ul>

  <ul class="text">
    <li *ngFor="let item of stepsData; let i=index">
        <div class="title" *ngIf="!!item.title">{{item.title}}</div>
        <div class="description" *ngIf="!!item.description">{{item.description}}</div>
    </li>
  </ul>
</div>

steps.component.ts

import { Component, OnInit, Input } from '@angular/core';
//引入Input
@Component({
  selector: 'app-steps',
  templateUrl: './steps.component.html',
  styleUrls: ['./steps.component.css']
})
export class StepsComponent implements OnInit {

  @Input() stepsData:any;
  @Input() active:string;
  constructor() { }

  ngOnInit() {
    console.log(!!!this.active)
    if(!!!this.active){
      this.active="1";
    }
  }

}

steps.component.css

.steps ul{
    display: flex;
}

li{
    width: 100%;
    text-align: center;
}

.lineUl{
    padding: 0px 10%;
    margin-bottom: 5px;
}

.liWidth{
    width: 20px;
}

.stepsIcon{
    display: flex;
}

.radioSelect {
  box-sizing: border-box;
  display: inline-block;
  border-radius: 100%;
  border: 1px solid #26a2ff;
  position: relative;
  width: 20px;
  height: 20px;
  vertical-align: middle;
  background-color: #26a2ff;
}

.radioSelect::after {
  border: 2px solid transparent;
  border-left: 0;
  border-top: 0;
  content: ' ';
  top: 3px;
  left: 6px;
  position: absolute;
  width: 4px;
  height: 8px;
  border-color: #fff;
  -webkit-transform: rotate(45deg) scale(1);
  transform: rotate(45deg) scale(1);
  -webkit-transition: -webkit-transform 0.2s;
  transition: -webkit-transform 0.2s;
  transition: transform 0.2s;
  transition: transform 0.2s, -webkit-transform 0.2s;
}

.radioSelectDisabled {
    background-color: #d9d9d9;
    border-color: #ccc;
}

.line{
    display: block;
    flex: 1;
    height: 16px;
    border-bottom: 1px solid#26a2ff;
    margin-top: -5px;
    font-size: 12px;
    color: #26a2ff;
}

.lineDefaule{
    border-bottom: 1px solid#d9d9d9;
}

.title{
    font-size: 14px;
}

.description{
    font-size: 12px;
}

4在项目中引用创建的组件

<app-steps [stepsData]="stepsData" [active]='3'></app-steps>

 public stepsData:any = [
    {
      title:'步骤1',
      description:'描述文件'
    },
    {
      title:'步骤2',
      description:'描述文件'
    },
    {
      title:'步骤3',
      description:'描述文件',
      tips:'待开奖'
    },
    {
      title:'步骤4',
      description:'描述文件'
    }
  ];

//stepsData:步骤条参数
//active：设置当前激活步骤，默认为1