如何在 React 中使用单选按钮?
我正在制作一个表格,我需要一个无线电输入.如何在 onSubmit 函数中获取选中的无线电输入,正确的方法是什么?
I'm making a form, and I was in need of a radio input. How do I get the checked radio input in a onSubmit-function, what is the correct way?
这是我的代码,我的 myRadioInput 变量在我提交时包含选项 A 或选项 B:
This is my code, I myRadioInput-variable to contain either Option A or Option B when I submit:
React.createClass({
handleSubmit: function() {
e.preventDefault();
var myTextInput = this.refs.myTextInput.getDOMNode().value.trim();
var myRadioInput = "How ?";
},
render: function() {
return (
<form onSubmit={this.handleSubmit}>
<input type="text" ref="myTextInput" />
<label>
<span>Option A</span>
<input type="radio" name="myRadioInput" value="Option A"/>
</label>
<label>
<span>Option B</span>
<input type="radio" name="myRadioInput" value="Option B"/>
</label>
<input type="submit" value="Submit this"/>
</form>
)
}
});
推荐答案
您不应该使用 refs 来访问 DOM 节点并检查它们的值.相反,您应该将输入值链接到组件状态的属性.
You shouldn't use refs to get access to DOM nodes and inspect their value. Instead you should link the inputs value to a property on the component state.
这里有一些示例:https://facebook.github.io/react/docs/two-way-binding-helpers.html
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