我无法弄清楚为什么我的handleDelete
功能没有运行。当我点击“删除”时什么都没发生。
在开发工具中,我看到删除按钮的值是正确的,但onClick
的属性根本没有显示。
var MainContainer = React.createClass({
getInitialState: function(){
return {
name: 'JK_MNO',
friends: [], //friends is items
text: ''
}
},
handleChange: function(e){
//like the onChange function
this.setState({
text: e.target.value
});
},
handleSubmit: function(e){
e.preventDefault();
if(this.state.text !== '') {
var nextfriend = this.state.friends.concat([{
text: this.state.text, id: Date.now()
}]);
var nextText = '';
this.setState({
friends: nextfriend, text: nextText
});
}
},
handleDelete: function(e){
console.log(this.state.friends);
this.friends.splice (this.props.friend.id);
this.setState({
friends: friends
});
},
render: function(){
return (
<div>
<h3> Name: {this.state.name} </h3>
<ShowList friends={this.state.friends} />
<form onSubmit={this.handleSubmit} >
Enter Friends: <input className="friendInput" onChange={this.handleChange} value={this.state.text} />
</form>
</div>
);
}
});
var ShowList = React.createClass({
render: function() {
var createFriend = function(friend) {
return (
<li key={friend.id}>{friend.text} <button onClick={this.props.handleDelete} value={friend.id}>Delete</button> </li>
);
};
return <ul>{this.props.friends.map(createFriend.bind(this))}</ul>;
}
});
ReactDOM.render(<MainContainer />, document.getElementById('container'));
答案 0 :(得分:1)
非常接近!您只需将删除功能传递给ShowList
作为道具:
电流:
<ShowList friends={this.state.friends} />
建议:
<ShowList friends={this.state.friends} handleDelete={this.handleDelete} />