我一直在尝试研究如何使用检查绑定与Knockout和JQuery Mobile一起使用。出于某种原因,vanilla Knockout JS“检查”绑定不起作用:
<fieldset data-role="controlgroup">
<legend>Your favorite flavor:legend>
<input type="radio" name="flavor-selection" value="Chocolate" id="flavor-selection-chocolate" data-bind="checked: flavor" />
<label for="flavor-selection-chocolate">Normal</label>
<input type="radio" name="flavor-selection" value="Vanilla" id="flavor-selection-vanilla" data-bind="checked: flavor" />
<label for="flavor-selection-vanilla">Party</label>
</fieldset>
任何想法为什么?
答案 0 :(得分:1)
事实证明,jQuery Mobile为单选按钮设置了标签,以显示无线电选择(隐藏实际的单选按钮本身)。
我尝试了这里找到的建议:http://codeclimber.net.nz/archive/2013/08/16/How-to-bind-a-jquery-mobile-radio-button-list-to.aspx但是没有取得任何成功 - 我怀疑它可能只适用于以前版本的jQuery Mobile。
这是我的替代选择:
创建一个自定义绑定,根据隐藏复选框的选中状态切换标签上的“ui-radio-on”和“ui-radio-off”类:
ko.bindingHandlers.jqMobileRadioChecked = {
init: function (element, valueAccessor, allBindingsAccessor, data, context) {
ko.bindingHandlers.checked.init(element, valueAccessor, allBindingsAccessor, data, context);
},
update: function (element, valueAccessor, allBindingsAccessor, data, context) {
var viewModelValue = valueAccessor();
var viewModelValueUnwrapped = ko.unwrap(viewModelValue);
var $el = $(element);
var $label = $el.siblings("label[for='" + $el.attr("id") + "']");
if (viewModelValueUnwrapped === $el.val()) {
$label.removeClass("ui-radio-off");
$label.addClass("ui-radio-on");
} else {
$label.removeClass("ui-radio-on");
$label.addClass("ui-radio-off");
}
}
};
然后HTML变成:
<fieldset data-role="controlgroup">
<legend>Your favorite flavor:legend>
<input type="radio" name="flavor-selection" value="Chocolate" id="flavor-selection-chocolate" data-bind="jqMobileRadioChecked: flavor" />
<label for="flavor-selection-chocolate">Normal</label>
<input type="radio" name="flavor-selection" value="Vanilla" id="flavor-selection-vanilla" data-bind="jqMobileRadioChecked: flavor" />
<label for="flavor-selection-vanilla">Party</label>
</fieldset>