使用React JS的HandleClick無法使用綁定

Question

這是我的反應代碼

handleRemoveClick = material => {
  let idMaterial = material.material_id;
  if(this.state.operation === 0){
    this.setState( { previewShowAlertRemoveProduct : true })
    }
    this.setState( { operation : 1, material_id : idMaterial})
}



handleEndOrder(){
  if(this.state.operation === 0){
    this.setState( { previewShowAlertRemoveProduct : true })
    }
    this.setState( { operation : 2})
}

這是用於渲染視圖：

  <button class="btn btn-xs btn-danger pull-right"  onClick={e => this.handleRemoveClick(material)}>x</button>

如何解決呢？ onClick它根本不起作用我在構造函數中綁定了handleEndOrder

Answer 1

既然你沒有指定按鈕類型，默認情況下submit ，你需要或者指定type="button"或使用e.preventDefault()一樣

<button class="btn btn-xs btn-danger pull-right" type="button" onClick={e => this.handleRemoveClick(material)}>x</button>

要么

handleRemoveClick = (e, material) => {
  e.preventDefault();
  let idMaterial = material.material_id;
  if(this.state.operation === 0){
    this.setState( { previewShowAlertRemoveProduct : true })
    }
    this.setState( { operation : 1, material_id : idMaterial})
}
<button class="btn btn-xs btn-danger pull-right"  onClick={e => this.handleRemoveClick(e, material)}>x</button>