private calcaulteGrades()

in src/performance/fmp.ts [211:251]

• 41 lines of code
• 12 McCabe index (conditional complexity)

  private calcaulteGrades(ele: Element, dpss: ICalScore[]): ICalScore {
    const { width, height, left, top } = ele.getBoundingClientRect();
    let isInViewPort: boolean = true;
    if (WH < top || WW < left) {
      isInViewPort = false;
    }
    let sdp: number = 0;
    dpss.forEach((item: any) => {
      sdp += item.st;
    });
    let weight: number = Number(ELE_WEIGHT[ele.tagName as any]) || 1;
    // If there is a common element of the background image, it is calculated according to the picture
    if (
      weight === 1 &&
      getStyle(ele, 'background-image') &&
      getStyle(ele, 'background-image') !== 'initial' &&
      getStyle(ele, 'background-image') !== 'none'
    ) {
      weight = ELE_WEIGHT.IMG;
    }
    // score = the area of element
    let st: number = isInViewPort ? width * height * weight : 0;
    let els = [{ ele, st, weight }];
    const root = ele;
    // The percentage of the current element in the viewport
    const areaPercent = this.calculateAreaParent(ele);
    // If the sum of the child's weights is greater than the parent's true weight
    if (sdp > st * areaPercent || areaPercent === 0) {
      st = sdp;
      els = [];
      for (const item of dpss) {
        els = els.concat(item.els);
      }
    }
    return {
      dpss,
      st,
      els,
      root,
    };
  }