How do elementui table merge lines merge from the bottom up? The default is from top to bottom.

  elementui table   :span-method 
    
  })-sharp-sharp-sharp 

the environmental background of the problems and what methods you have tried

merge down by default, but can I merge online in advance

related codes

/ / Please paste the code text below (do not replace the code with pictures)


  
  this.tableData.forEach((item, index) => {
    if (index === 0) {
      this.spanArr.push(1)
      this.position = 0
    } else {
      if (this.tableData[index].name=== this.tableData[index - 1].name) {
        this.spanArr[this.position] += 1
        this.spanArr.push(0)
      } else {
        this.spanArr.push(1)
        this.position = index
      }
    }

what result do you expect? What is the error message actually seen?

Apr.21,2022
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