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  <li>Components</li>
  <li>EcharsComponent</li>
</ol>


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        <li class="active">
            <a href="#infos" id="infos-tab" role="tab" data-toggle="tab">Infos</a>
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    <h3>File</h3>
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<p class="comment">
    <code>src/modules/lesson/echars/echars.component.ts</code>
</p>


<section>
    <h3>Metadata</h3>
    <table class="table table-sm table-hover">
        <tbody>


            <tr>
                <td class="col-md-3">selector</td>
                <td class="col-md-9"><code>app-echars</code></td>
            </tr>

            <tr>
                <td class="col-md-3">styleUrls</td>
                <td class="col-md-9"><code>echars.component.scss</code></td>
            </tr>


            <tr>
                <td class="col-md-3">templateUrl</td>
                <td class="col-md-9"><code>echars.component.html</code></td>
            </tr>


        </tbody>
    </table>
</section>

    <section>
        <h3 id="inputs">Inputs</h3>
            <table class="table table-sm table-bordered">
                <tbody>
                    <tr>
                        <td class="col-md-2">
                            <code>options</code>
                        </td>
                        <td class="col-md-10">
                              <p>
                                <em>Type:</em>    <code>any</code>

                              </p>
                        </td>
                    </tr>
                </tbody>
            </table>
    </section>


    <section>
        <h3 id="constructor">Constructor</h3>
            <table class="table table-sm table-bordered">
                <tbody>
                    <tr>
                        <td class="col-md-4">
                            <code>constructor()</code>
                        </td>
                    </tr>
    
                </tbody>
            </table>
    </section>

    <section>
        <h3 id="methods">Methods</h3>
            <table class="table table-sm table-bordered">
                <tbody>
                    <tr>
                        <td class="col-md-4">
                            <b><span class="modifier"></span> createEcharts</b>
                        </td>
                    </tr>
    
                    <tr>
                        <td class="col-md-4">
                                <span class="modifier-icon method fa fa-play ">
                                    <span class="fa fa-"></span>
                                </span>
                            <code>createEcharts()</code>
                        </td>
                    </tr>
    
                    <tr>
                        <td class="col-md-4">
                                <div class="io-description">
                                    <b>Returns: </b>    <code>void</code>
    
                                </div>
                        </td>
                    </tr>
                </tbody>
            </table>
    </section>

    <section>
        <h3 id="inputs">Properties</h3>
            <table class="table table-sm table-bordered">
                <tbody>
                    <tr>
                        <td class="col-md-4">
                            <b> chartDiv</b>
                        </td>
                    </tr>
                    <tr>
                        <td class="col-md-4">
                            <code>chartDiv:     <code>boolean</code>
    </bcode>
                        </td>
                    </tr>
                </tbody>
            </table>
            <table class="table table-sm table-bordered">
                <tbody>
                    <tr>
                        <td class="col-md-4">
                            <b> ElementRef</b>
                        </td>
                    </tr>
                    <tr>
                        <td class="col-md-4">
                            <code>ElementRef:     <code>any</code>
    </bcode>
                        </td>
                    </tr>
                </tbody>
            </table>
    </section>
</div>
        <div class="tab-pane fade tab-source-code" id="source">
            <pre><code class="hljs javascript">import { Component, Input, AfterViewInit } from &#x27;@angular/core&#x27;;
// 引入Angular的DOM操作装饰器ViewChiild
import { ViewChild, ElementRef } from &#x27;@angular/core&#x27;;
// 引入echarts第三方库
import * as echarts from &quot;echarts&quot;

@Component({
  selector: &#x27;app-echars&#x27;,
  templateUrl: &#x27;./echars.component.html&#x27;,
  styleUrls: [&#x27;./echars.component.scss&#x27;]
})

export class EcharsComponent implements AfterViewInit {
  // 编写Echart图表的配置项与数据 
  @Input() options: any &#x3D; {
    xAxis: {
      type: &#x27;category&#x27;,
      data: [&#x27;Mon&#x27;, &#x27;Tue&#x27;, &#x27;Wed&#x27;, &#x27;Thu&#x27;, &#x27;Fri&#x27;, &#x27;Sat&#x27;, &#x27;Sun&#x27;]
    },
    yAxis: {
      type: &#x27;value&#x27;
    },
    series: [
      {
        data: [150, 230, 224, 218, 135, 147, 260],
        type: &#x27;line&#x27;
      }
    ]
  };
  // 通过ViewChild获取页面中#chartDiv标记的DOM元素
  @ViewChild(&quot;chartDiv&quot;, { static: false }) chartDiv!: ElementRef;

  constructor() {

  }

  // 生命周期:视图DOM加载完成后再执行创建图表操作
  ngAfterViewInit(): void {
    this.createEcharts();
  }
  async createEcharts() {
    // 从ViewChild元素中获取dom节点
    let chartDom &#x3D; this.chartDiv.nativeElement;
    // 向指定节点渲染初始化echarts
    let myChart &#x3D; echarts.init(chartDom);
    // 当配置项存在时
    // 根据配置渲染图表内容
    this.options &amp;&amp; myChart.setOption(this.options);
  }
}</code></pre>
        </div>
    </div>


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