javascript - ASP.NET 3.5 AJAX 控件工具包 PopupControlExtender

Question

我试图通过传递一些参数来概括 PopupControlExtender 的 .add_hiding，但由于某种原因它不起作用。

function onPageLoad() {
            var modalPopup = $find('txbCliente_PopupControlExtender');
            modalPopup.add_hiding(onHidingPopUp('cblCliente','txbCliente'));
        }
        function onHidingPopUp(cblId, txbID) {
            var cbl = document.getElementById(cblId);
            var optionsIds = cbl.getElementsByTagName('input');
            var optionsLabels = cbl.getElementsByTagName('label');
            var varios = false;
            var txb = document.getElementById(txbID);
            var text = "";

            for (var i = 0; i < optionsIds.length; i++) {
                if (optionsIds[i].checked && varios) {
                    text = "Mútiplos Valores.";
                    break;
                }
                else if (optionsIds[i].checked && !varios) {
                    varios = true;
                    text = optionsLabels[i].textContent;
                }
            }

            txb.value = text;
        }

Answer 1

您将调用 onHidingPopUp('cblCliente','txbCliente') 的结果(而不是函数本身)传递给 add_hiding 方法。如果您想将预定义的参数传递给函数，请将其包装在另一个函数中:

modalPopup.add_hiding(function() {
    onHidingPopUp('cblCliente','txbCliente')
});

如果只有一个参数，您还可以使用 MS Ajax Function.createCallback 扩展:

modalPopup.add_hiding(Function.createCallback(onHidingPopUp, 'cblCliente'));