$(document).ready(function () {
$(document).on("scroll", onScroll);
//MENU
$('.menu ul li a[href^="#"]').on('click', function (e) {
e.preventDefault();
$(document).off("scroll");
$('a').each(function () {
$(this).removeClass('active');
})
$(this).addClass('active');
var target = this.hash;
$target = $(target);
$('html, body').stop().animate({
'scrollTop': $target.offset().top+2
}, 1000, 'swing', function () {
window.location.hash = target;
$(document).on("scroll", onScroll);
});
});
});
function onScroll(event){
var scrollPosition = $(document).scrollTop();
$('a').each(function () {
var currentLink = $(this);
var refElement = $(currentLink.attr("href"));
if (refElement.position().top <= scrollPosition && refElement.position().top + refElement.height() > scrollPosition) {
$('.menu ul li a').removeClass("active");
currentLink.addClass("active");
}
else{
currentLink.removeClass("active");
}
});
}
个变量包含数据，但此时发生错误ds1
NullReference Exception实际代码块是：
`TextBox2.Text = ds1.Tables("Custmor").Rows(0).Item(0).ToString()`