在React.js中检索checkbox的值

Question

我想在选中复选框时检索其复选框的值.

我正在使用这个" http://react-component.github.io/checkbox/ ".

我的代码看起来像这样.

<div className="user_box">
    { check.map((values , i)=> {
        return <Checkbox
            name = "checkbox"
            onChange={this.checkvalue.bind(this)}
            value={values.username} 
        />
    })}
</div>

我的功能:

checkvalue(e){
    // var all_users = [];
    // var value = this.checkbox.value;
    // all_users.push(value);
    // console.log(all_users);

    console.log('checkbox checked:', (e.target.checked));
}

我不明白如何检索复选框的值.

Answer 1

使用合成事件参数，这里是一个示例：

const element1 = "boy";
const element2 = "girl";

<input
 type="checkbox"
 name={element1}
 value={element1}
 onChange={this.handleChange}
/>
<label for="element" style={{ fontSize: 35 }}>
{element2}
 </label>

<input
 type="checkbox"
 name={element2}
 value={element2}
 onChange={this.handleChange}
/>
<label for="element" style={{ fontSize: 35 }}>
{element2}
 </label>




handleChange = (e) => {
// to find out if it's checked or not; returns true or false
const checked = e.target.checked;

// to get the checked value
const checkedValue = e.target.value;

// to get the checked name
const checkedName = e.target.name;

//then you can do with the value all you want to do with it.
};

Answer 2

你需要将"e,Synthetic事件参数传递给你的处理程序":

handleChange(e) {
  let isChecked = e.target.checked;
  // do whatever you want with isChecked value
}

render() {
  // ... your code here
  return (
    {/* your other jsx here */}
    <Checkbox otherProps onChange={e => this.handleChange(e)} />
    {/* your other jsx here */}
  );
}