按 Enter React.js 时专注于下一个字段 [英] Focus on next field when pressing enter React.js
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问题描述
当我使用 React.js 在输入中单击 Enter 时,我想找到一种方法来关注下一个字段
I would like to find a way to focus on the next field when I click enter in the input using React.js
@autobind
handleKeyPress(event){
if(event.key === 'Enter'){
this.refs.email.focus();
}
}
@autobind
handleKeyPressEmail(event){
if(event.key === 'Enter'){
this.refs.zip_code.focus();
}
}
<input
onKeyPress={this.handleKeyPress}
ref = 'name'
/>
<input
onKeyPress={this.handleKeyPressEmail}
ref = 'email'
/>
<input
ref = 'zip_code'
/>
这是迄今为止我找到的最好的方法,但是我不想每次都创建一个函数来重复自己.有没有更好、更简洁的方法来实现这一点?
This is the best way I have found so far, however I don't want to repeat myself by creating a function everytime I want that to happen. Is there a better and cleaner way to implement this?
推荐答案
如果 存在:
function handleEnter(event) {
if (event.keyCode === 13) {
const form = event.target.form;
const index = Array.prototype.indexOf.call(form, event.target);
form.elements[index + 1].focus();
event.preventDefault();
}
}
...
<form>
<input onKeyDown={handleEnter} />
<input onKeyDown={handleEnter} />
<input />
</form>
没有:
function useFocusNext() {
const controls = useRef([]);
const handler = (event) => {
if (event.keyCode === 13) {
// Required if the controls can be reordered
controls.current = controls.current
.filter((control) => document.body.contains(control))
.sort((a, b) =>
a.compareDocumentPosition(b) & Node.DOCUMENT_POSITION_FOLLOWING
? -1 : 1
);
const index = controls.current.indexOf(event.target);
const next = controls.current[index + 1];
next && next.focus();
// IE 9, 10
event.preventDefault();
}
};
return useCallback((element) => {
if (element && !controls.current.includes(element)) {
controls.current.push(element);
element.addEventListener('keydown', handler);
}
}, []);
};
...
const focusNextRef = useFocusNext();
<input ref={focusNextRef} />
<input ref={focusNextRef} />
<button ref={focusNextRef}>Submit</button>
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