Question

我的反应组件有问题。我有自定义样式的复选框，例如http://jsfiddle.net/fvdbcch0/

我想点击我的组件或标签来检查或取消选中输入。

目前，只有在我完全点击输入时，它才会在基本样式上工作。

如何正确更改检查状态onChange？

代码：

 var Tag = React.createClass({
getInitialState: function(){

  return {
      checked: false
  };
},
componentDidMount: function() {
    this.setState({
        checked: false
      });
},
_onChange: function(event) {
   if(this.state.checked == false){
       this.setState({
        checked: true
      });
   } else {
       this.setState({
        checked: false
      });
   }
},
    render: function() {
        return (
            <div>
                <input type="checkbox" id="{this.props.id}" name="{this.props.name}" checked={this.state.checked} onChange={ this._onChange }
  value={ this.props.id }/><label htmlFor="{this.props.name}">{this.props.name}</label>
            </div>
        );
    }
});
var ReviewTag = React.createClass({
    render: function() {
         var tags = [{"id": 1, "name": "friendly"}, {"id": 2, "name": "comfortable"}, {"id": 3, "name": "fast"}];
         const tagComps = tags.map(function(tag){
           return <Tag {...tag} />;
         });
        return (
        <div>
             {tagComps}
        </div>
    );
    }
});

React.render(<ReviewTag/>, document.body);

我的自定义输入的样式：

/* Base for label styling */
[type="checkbox"]:not(:checked),
[type="checkbox"]:checked,
[type="radio"]:not(:checked),
[type="radio"]:checked{
  position: absolute;
  left: -9999px;
}
[type="checkbox"]:not(:checked) + label,
[type="checkbox"]:checked + label,
[type="radio"]:not(:checked) + label,
[type="radio"]:checked + label{
  position: relative;
  padding-left: 25px;
  cursor: pointer;
}

/* checkbox/radio aspect */
[type="checkbox"]:not(:checked) + label:before,
[type="checkbox"]:checked + label:before,
[type="radio"]:not(:checked) + label:before,
[type="radio"]:checked + label:before{
  content: '';
  position: absolute;
  left:0; top: 50%;
  width: 1rem; height:1rem;
  border: 1px solid #aaa;
  background: #fff;
  box-shadow: inset 0 1px 3px rgba(0,0,0,.3);
  transform: translateY(-50%);
}
[type="radio"]:not(:checked) + label:before,
[type="radio"]:checked + label:before{
  border-radius:100%;
}
/* checked mark aspect */
[type="checkbox"]:checked + label:after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 0px;
  font-size: 1rem;
  line-height: 0.8;
  color: #e71558;
  transition: all .2s;
  transform: translateY(-50%);
}
/* checked radio aspect */
[type="radio"]:checked + label:after {
  content: '•';
  position: absolute;
  top: 6px;
  left: 2px;
  font-size: 15px;
  line-height: 0.8;
  color: #e71558;
  transition: all .2s;
  //transform: translateY(-50%);
  text-align: center;
}
/* checked mark aspect changes */
[type="checkbox"]:not(:checked) + label:after,
[type="radio"]:not(:checked) + label:after{
  opacity: 0;
  transform: scale(0);
}
[type="checkbox"]:checked + label:after,
[type="radio"]:checked + label:after {
  opacity: 1;
  //transform: scale(1);
}
/* disabled checkbox/radio */
[type="checkbox"]:disabled:not(:checked) + label:before,
[type="checkbox"]:disabled:checked + label:before,
[type="radio"]:disabled:not(:checked) + label:before,
[type="radio"]:disabled:checked + label:before{
  box-shadow: none;
  border-color: #bbb;
  background-color: #ddd;
}
[type="checkbox"]:disabled:checked + label:after,
[type="radio"]:disabled:checked + label:after{
  color: #999;
}
[type="checkbox"]:disabled + label,
[type="radio"]:disabled + label{
  color: #aaa;
}
/* accessibility */
[type="checkbox"]:checked:focus + label:before,
[type="checkbox"]:not(:checked):focus + label:before,
[type="radio"]:checked:focus + label:before,
[type="radio"]:not(:checked):focus + label:before{
  border: 1px dotted blue;
}

/* hover style just for information */
label:hover:before {
  border: 1px solid #4778d9!important;
}

非常感谢您的帮助。

Answer 1

您的复选框缺少一些必需的道具才能使其正常工作。您需要能够告诉复选框是否已选中使用道具或状态。你还需要给每个复选框一个值，这样当你检查它时，你实际上会有一个值可以使用。最后，当你点击复选框时，你需要一个onChange道具。此函数应更新控制是否选中该特定复选框的任何状态。以下是为react

创建的复选框输入示例

<input name={ this.props.name }
      type="checkbox"
      checked={ this.props.checked }
      className="cui-checkbox-input"
      onChange={ this._onChange }
      value={ this.props.value } />

_onChange是一个类似于

的函数

_onChange: function(event) { 
   // do stuff using the event to grab needed values
}

Answer 2

好的，我找到了解决方案。

我在组件的标签中添加了onClick={ this._onChange }，它可以正常工作！

在Reactjs中选中/选中未选中的属性onChange复选框

2 个答案: