Function getHighestZIndexValue

frontend/public/assistant.js:100–143

()

  }

  function getHighestZIndexValue() {
    try {
      let maxZIndex = -Infinity
      let foundAny = false

      const allElements = document.all || document.querySelectorAll('*')

      for (let i = 0; i < allElements.length; i++) {
        const element = allElements[i]

        if (!element || element.nodeType !== 1) continue

        const styles = window.getComputedStyle(element)

        const position = styles.position
        if (position === 'static') continue

        const zIndex = styles.zIndex
        let zIndexValue

        if (zIndex === 'auto') {
          zIndexValue = 0
        } else {
          zIndexValue = parseInt(zIndex, 10)
          if (isNaN(zIndexValue)) continue
        }

        foundAny = true

        // 快速返回：如果找到很大的z-index，很可能就是最大值
        /* if (zIndexValue > 10000) {
          return zIndexValue;
        } */

        if (zIndexValue > maxZIndex) {
          maxZIndex = zIndexValue
        }
      }
      return foundAny ? maxZIndex : 0
    } catch (error) {
      console.warn('获取最高z-index时出错，返回默认值0:', error)
      return 0
    }
  }

  /**
   * 初始化引导