Question

我有一个显示国家/地区的下拉列表。当用户选择美国或加拿大时，将显示另一个下降。一切都适用于Firefox，但不适用于Internet Explorer。

$(document).ready(function() {
    $('.CountriesDropDown').change(changeAddressOptions);
   // alert('loaded');
    // call change event in case value was cached from reset
});

function changeAddressOptions(){
    // this is drop down
    var jsThis = $(this);
    var selectedVal = jsThis.val();

    var targetElementWrapper = jsThis.parents('li:first').siblings('.addressContentsWrapper');
    var elementToPopulate = targetElementWrapper.children('.addressContents');

    if (selectedVal == null || selectedVal == '') {
        targetElementWrapper.fadeOut();
        elementToPopulate.empty();
    }
    else {
        var loadingImage = jsThis.siblings('.loadingImage');
        loadingImage.show();
        var bindingPrefix = extractBindingPrefix(jsThis);
        if (selectedVal == 'US') {
            var elementUrl = '/AddressInfo.aspx/UsAddressInfo/?bindingPrefix=' + bindingPrefix;
        }
        else if (selectedVal == 'CA') {
        var elementUrl = '/AddressInfo.aspx/CanadaAddressInfo/?bindingPrefix=' + bindingPrefix;
        }
        else {
            var elementUrl = '/AddressInfo.aspx/InternationalAddressInfo/?bindingPrefix=' + bindingPrefix;
        }
        targetElementWrapper.hide();
        elementToPopulate.empty();
        $(elementToPopulate).load(elementUrl, countryLoadComplete);
    }
}

function countryLoadComplete() {
    var wrapper = $(this).parents('.addressContentsWrapper:first');
    $(wrapper).fadeIn('fast', hideLoadingImage);
}

function hideLoadingImage() {
    var loadingImage = $(this).siblings().find('.loadingImage');
    loadingImage.hide();
}

function extractBindingPrefix(element) {
    // hack - grab binding prefix from neighboring labe, since lastIndexOf never works;
    var bindingPrefixHolder;
    var bindingPrefix;
    bindingPrefixHolder = $(element).siblings('.bindingPrefix');
  ///  var lastPeriod = elementName.indexOf('.', 0);
   // if (lastPeriod = -1)
   //     bindingPrefix = '';
    //else {
    //    bindingPrefix = elementName.substring(0, lastPeriod);
   // }

    bindingPrefix = bindingPrefixHolder.html();
    return bindingPrefix;
}

Answer 1

每次使用jQuery函数时，都必须在$（）中包装jQuery对象：

var jsThis = $(this);
var selectedVal = jsThis.val();

应该是

var jsThis = $(this);
var selectedVal = $(jsThis).val();

这需要在脚本的许多地方修复。

在下拉列表中选择项目时，jQuery无法在IE中工作

1 个答案: