我有一个在选择框中动态创建“选项”的代码集。但是,由于我们使用的是 Knockout,当我选择 SELECT 新创建的选项并单击它时,它会被删除,例如 DISAPPEARS!噗!!!!
所以,这里是创建脚本:
function createNewGroup()
{
var htmlSelect = document.getElementById('groups');
var optionValue = document.getElementById('newgroupname');
if (optionValue.value === '')
{
alert('Please enter group name.');
optionValue.focus();
return false;
}
if (isOptionAlreadyExist(htmlSelect, optionValue.value))
{
optionValue.value = "";
alert('Group name already exists.\n\nPlease try again.');
optionValue.focus();
return false;
}
var selectBoxOption = document.createElement("option");
selectBoxOption.value = optionValue.value;
selectBoxOption.text = optionValue.value;
htmlSelect.add(selectBoxOption, null);
optionValue.value = "";
alert("New group has been added successfully.");
optionValue.focus();
return true;
};
由于这是一个 KNOCKOUT observable,当我选择它时如何将它保留在框中,此外,我如何将新值发送回 JSON 对象。这是一个例子:
{“组”:[
{
"groupname" : "Administrator",
"attr" : { "id" : "li.attr.node_1",
"href" : "#",
"data-bind" : "click: grpMgmt('Administrator');" }
},
{
"groupname" : "Guest",
"attr" : { "id" : "li.attr.node_2",
"href" : "#",
"data-bind" : "click: grpMgmt('Guest');" }
}
]
}
因此,管理员用户可以创建一个新用户,它看起来像这样:
{“组”:[
{
"groupname" : "Administrator",
"attr" : { "id" : "li.attr.node_1",
"href" : "#",
"data-bind" : "click: grpMgmt('Administrator');" }
},
{
"groupname" : "Guest",
"attr" : { "id" : "li.attr.node_2",
"href" : "#",
"data-bind" : "click: grpMgmt('Guest');" }
}
],
“用户”:[
{
"groupname" : "Joes Users",
"attr" : { "id" : "li.attr.node_1",
"href" : "#",
"data-bind" : "click: grpMgmt('Joe');" }
}
]
}
好的,我暂时停止写...谢谢...