Javascript React.js：您使用不可调用的回调调用了`setState`
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React.js :You called `setState` with a callback that isn't callable
提问by Fleeck
This is my piece of code, which works correctly (adds records), but throws an error after addition:
这是我的一段代码，它工作正常（添加记录），但添加后抛出错误：
Uncaught Error: Invariant Violation: enqueueCallback(...): You called
setProps,replaceProps,setState,replaceState, orforceUpdatewith a callback that isn't callable.
Uncaught Error: Invariant Violation: enqueueCallback(...): You call
setProps,replaceProps,setState,replaceState, 或forceUpdate使用不可调用的回调。
handleSubmit: function(e) {
e.preventDefault();
return $.post('', {page: this.state},
function(data) {
this.props.handleNewPage(data);
return this.setState(this.getInitialState(), 'JSON');
}.bind(this)
);
}
There are no routes for now. Can someone help me to solve this?
目前没有路线。有人可以帮我解决这个问题吗？
回答by Madara's Ghost
回答by Hannes Johansson
You actually invoke getInitialStateinstead of providing a reference to the function itself on the line return this.setState(this.getInitialState(), 'JSON');and the second argument should never be anything but a callback function.
您实际上是在调用getInitialState而不是在行上提供对函数本身的引用，return this.setState(this.getInitialState(), 'JSON');并且第二个参数不应该只是回调函数。
this.setStateexpects either a function that should return a state object as a single argument, or an object to merge the current state with (plus optionally a callback as a second argument to run after state has been set). So either you provide just a function that returns the new state, or you provide an object that the current state should be merged with as a first argument and a callback that will be executed after the state has been set as second argument.
this.setState期望一个函数应该返回一个状态对象作为单个参数，或者一个对象来合并当前状态（加上可选的回调作为第二个参数在状态设置后运行）。因此，您要么只提供一个返回新状态的函数，要么提供一个对象，该对象应将当前状态合并为第一个参数，并在将状态设置为第二个参数后执行回调。
Either this.setState(this.getInitialState)or this.setState(this.getInitialState())or this.setState(newState, callback).
无论是this.setState(this.getInitialState)或this.setState(this.getInitialState())或this.setState(newState, callback)。
Check out the signature in the API here.
在此处查看 API 中的签名。
