Question

这是我的HTML代码：

<div class="editable-select-holder">
    <input type="text" name="position" id="position" value="${userInfoForm.position}">
    <button type="button" class="editable-select-expander"></button>
    <ul class="editable-select-options">
        <c:forEach var="position" items="${positions}">
            <li>${position.description}</li>
        </c:forEach>
    </ul>
</div>

这是Jquery：

$(document).on('click', '.editable-select-expander', function () {
    var $holder = $(this).parent();
    $holder.toggleClass('editable-select-expanded');
    $holder.on('click', 'li', function () {
        var $t = $(this);
        $holder.removeClass('editable-select-expanded');
        $holder.find('input').val($t.text());
    });
});

当我点击按钮或专注于输入时，我想要exand列表。我上面提供的代码仅适用于按钮点击。在焦点事件上我也需要相同的逻辑。有什么建议吗？

改变了这样但仍然无法正常工作。

 $(document).on("click",'.editable-select-holder', function() {
                var $holder = $(this);
                $holder.on('click','.editable-select-expander', function() {
                    $holder.toggleClass('editable-select-expanded');
                });

                $holder.on('click', 'li', function() {
                    var $t = $(this);

                    $holder.removeClass('editable-select-expanded');

                    $holder.find('input').val($t.text());
                });

                $holder.on('focus', 'input', function() {
                    $holder.addClass('editable-select-expanded');
                });
            });

Answer 1

我希望你能使用这段代码

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text {

    if([text isEqualToString:@"\n"]) {
        [textView resignFirstResponder];
        return NO;
    }
    return YES;

    // error thrown here saying code will never execute
    if(range.length + range.location > textField.text.length)
{
    return NO;
}

NSUInteger newLength = [textField.text length] + [string length] - range.length;
return newLength <= 300;
}

可编辑选择

1 个答案: