关于按键丢失字符的jquery

Question

当试图听取按键然后提交数据进行验证时，该值似乎是1个字符...

$(function () {
    $('.entry').on('change keypress', function () {
        alert($(this).val());
    });
});

HTML

<tr>
    <th>Name</th>
    <td>
        <input class='entry' type='text' id='name' name='name'>
    </td>

Fiddle Example

Answer 1

尝试使用$(".entry").on("input", function() { alert($(this).val()); }); 事件

input

jsfiddle http://jsfiddle.net/ba6688my/1/

Answer 2

改为使用$(function(){ $('.entry').on('input',function(){ alert($(this).val()); }); }); 事件：

- (void)scrollToBottomAnimated:(BOOL)animated
{
if ([self.collectionView numberOfSections] == 0) {
    return;
}

NSInteger items = [self.collectionView numberOfItemsInSection:0];

if (items == 0) {
    return;
}

CGFloat collectionViewContentHeight = [self.collectionView.collectionViewLayout collectionViewContentSize].height;
BOOL isContentTooSmall = (collectionViewContentHeight < CGRectGetHeight(self.collectionView.bounds));

if (isContentTooSmall) {
    //  workaround for the first few messages not scrolling
    //  when the collection view content size is too small, `scrollToItemAtIndexPath:` doesn't work properly
    //  this seems to be a UIKit bug, see #256 on GitHub
    [self.collectionView scrollRectToVisible:CGRectMake(0.0, collectionViewContentHeight - 1.0f, 1.0f, 1.0f)
                                    animated:animated];
    return;
}

//  workaround for really long messages not scrolling
//  if last message is too long, use scroll position bottom for better appearance, else use top
//  possibly a UIKit bug, see #480 on GitHub
NSUInteger finalRow = MAX(0, [self.collectionView numberOfItemsInSection:0] - 1);
NSIndexPath *finalIndexPath = [NSIndexPath indexPathForItem:finalRow inSection:0];
CGSize finalCellSize = [self.collectionView.collectionViewLayout sizeForItemAtIndexPath:finalIndexPath];

CGFloat maxHeightForVisibleMessage = CGRectGetHeight(self.collectionView.bounds) - self.collectionView.contentInset.top - CGRectGetHeight(self.inputToolbar.bounds);

UICollectionViewScrollPosition scrollPosition = (finalCellSize.height > maxHeightForVisibleMessage) ? UICollectionViewScrollPositionBottom : UICollectionViewScrollPositionTop;

[self.collectionView scrollToItemAtIndexPath:finalIndexPath
                            atScrollPosition:scrollPosition
                                    animated:animated];
}