如何使用 jQuery 自动切换到下一个字段？
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How can I automatically tab to the next field using jQuery?
提问by Nathan Long
In jQuery, how can I trigger the behavior of a user tabbing to the next input field?
在 jQuery 中，如何触发用户跳转到下一个输入字段的行为？
I've tried this:
我试过这个：
var e = jQuery.Event("keydown");
e.which = 9; // # Key code for the Tab key
$("input").trigger(e);
But triggering the event doesn't move the cursor to the next field.
但是触发事件不会将光标移动到下一个字段。
I suppose I could move the cursor manually using focus(), but deciding which field should be next is something the browser already knows how to do, so it seems much cleaner to just trigger a tab.
我想我可以使用 手动移动光标focus()，但决定下一个应该是哪个字段是浏览器已经知道如何做的事情，所以只触发一个选项卡似乎更清晰。
Any ideas?
有任何想法吗？
采纳答案by James Allardice
See the accepted answer to this question. If for example you want to move focus to the next field when a certain number of characters have been entered, you could use that code in the keyupevent, and check the entered number of characters.
请参阅此问题的已接受答案。例如，如果您想在输入一定数量的字符后将焦点移到下一个字段，您可以在keyup事件中使用该代码，并检查输入的字符数。
The code in that answer works by getting the set of inputs in the form, finding the selected input and adding 1 to the index of the selected input, and then triggering the focusevent on the element with that index.
该答案中的代码通过获取表单中的一组输入、找到所选输入并将 1 添加到所选输入的索引，然后focus在具有该索引的元素上触发事件来工作。
回答by Yardboy
Here's one solution, via http://jqueryminute.com/set-focus-to-the-next-input-field-with-jquery/
这是一种解决方案，通过http://jqueryminute.com/set-focus-to-the-next-input-field-with-jquery/
$.fn.focusNextInputField = function() {
return this.each(function() {
var fields = $(this).parents('form:eq(0),body').find(':input').not('[type=hidden]');
var index = fields.index( this );
if ( index > -1 && ( index + 1 ) < fields.length ) {
fields.eq( index + 1 ).focus();
}
return false;
});
};
The use is as follows:
使用方法如下：
$( 'current_field_selector' ).focusNextInputField();
回答by laffuste
回答by JimP
Have you tried using
你有没有试过使用
$("input").trigger( 'keypress', e );
$("input").trigger( 'keypress', e );
as a solution?
I find sometimes being explicit is best.
If that doesn't work possibly even
作为解决方案？
我发现有时明确是最好的。如果那甚至行不通
$("input").trigger( 'keypress', [{preventDefault:function(){},keyCode:9}] );.
$("input").trigger( 'keypress', [{preventDefault:function(){},keyCode:9}] );.
Hope this helps.
希望这可以帮助。
