个人中心
文章发布
退出
作者热门文章
- html - 出于某种原因，IE8 对我的 Sass 文件中继承的 html5 CSS 不友好？
- JMeter 在响应断言中使用 span 标签的问题
- html - 在 :hover and :active? 上具有不同效果的 CSS 动画
- html - 相对于居中的 html 内容固定的 CSS 重复背景？
24
4
我正在尝试将 JSON/JavaScript 对象解析为 HTML...大部分工作正常，但我无法弄清楚我的递归构建方法 (App.Layout.Form.DocumentDirector)...
它会在不应该的时候继续嵌套(追加)元素。请参阅 http://jsfiddle.net/blogshop/DSxft/6/ 中的示例和代码
有人能帮我弄清楚吗？构建方法位于第 408 行(在 fiddle 中——向下滚动 DocumentDirector 一点点以在此处看到它)。谢谢!
构建方法
build: function (obj, level) {
var that = this,
builder = this.getBuilder(),
iterator = Object.create(App.Utilities.RecursiveIterator(obj)),
level = level || 0,
prev = this._prevLevel || 0,
next = level,
key,
current,
attributes,
pair,
children,
hasType = false,
maxNesting = false;
do {
// Get the current node and build it
key = iterator.key();
current = iterator.current();
console.log(iterator.key() + ": " + iterator.current().toSource());
if (current.hasOwnProperty('type') && current.type !== '') {
if (current.hasOwnProperty('type') && current.type !== '') {
//console.log(iterator.current().type);
attributes = {};
$.each(current, function(key, value) {
if (that._validAttributes.indexOf(key) !== -1) {
attributes[key] = value;
}
});
//console.log(attributes);
}
//console.log("Prev: " + prev);
console.log("Level: " + level);
if (level == prev && level == 0) {
builder.append(current.type, attributes);
} else if (level == prev && level > 0) {
builder.add(current.type, attributes);
} else if (level < prev && level > 0) {
builder.parent().append(current.type, attributes);
} else if (level > prev && level > 0) {
builder.append(current.type, attributes);
} else {
// Do nothing
}
if (current.hasOwnProperty('label')) {
var label = builder.addBefore(builder.getCurrent(), 'label');
builder.text(current.label, label);
}
}
// Are there child nodes? If so, recurse...
if (iterator.hasChildren()) {
children = iterator.getChildren();
if (this.isCollection(key, current)) {
//console.log("I am a container");
}
//console.log("I have children");
console.log("-----------------------------");
hasType = (current.hasOwnProperty('type') && current.type !== '') ? current.type : false;
if (hasType) {
maxNesting = (this.isVoid(current.type)) ? true : false;
}
if (maxNesting === false) {
next = level;
if (hasType) {
this._prevLevel = level;
next = level + 1;
}
this.build(children, next);
}
} else {
if (current.hasOwnProperty('type') && current.type !== '') {
//console.log("I am childless");
console.log("-----------------------------");
}
}
iterator.next();
} while (iterator.hasNext());
if (current && current.hasOwnProperty('type') && current.type !== '') {
if (iterator.hasNext() === false) {
//console.log("<----- MOVING UP " + parseInt(level - prev) + " LEVELS ----->");
//console.log("Diff: " + parseInt(level - prev));
//console.log("Level: " + level);
//console.log("Prev: " + prev);
builder.parent();
this._prevLevel = level - prev;
}
}
},
附加信息
DocumentDirector: function (builder) {
var director = Object.create({
_builder: {},
_validCollection: ['sections', 'forms', 'fieldsets', 'rows', 'fields'],
_validAttributes: ['id', 'name'],
_voidElements: ['base', 'br', 'col', 'command', 'embed', 'hr', 'img', 'img', 'input', 'link', 'meta', 'param', 'source'],
_inputElements: ['text', 'select', 'radio', 'checkbox', 'textarea', 'datepicker', 'yesno'],
_prevLevel: 0,
init: function (builder) {
builder = builder || '';
if (builder) this.setBuilder(builder);
return this;
},
setBuilder: function (builder) {
this._builder = builder;
return this;
},
getBuilder: function () {
return this._builder;
},
isCollection: function (key, node) {
// Collections MUST have a key, as they don't have a type
key = key || '';
if (key === '') return false;
return (node.constructor === Array && this._validCollection.indexOf(key) !== -1) ? true : false;
},
isVoid: function (type) {
var isVoidElement = false;
if (this._voidElements.indexOf(type.toString()) !== -1) {
isVoidElement = true;
}
if (this._inputElements.indexOf(type.toString()) !== -1) {
isVoidElement = true;
}
return isVoidElement;
},
build: function (obj, level) {
var that = this,
builder = this.getBuilder(),
iterator = Object.create(App.Utilities.RecursiveIterator(obj)),
level = level || 0,
prev = this._prevLevel || 0,
next = level,
key,
current,
attributes,
pair,
children,
hasType = false,
maxNesting = false;
do {
// Get the current node and build it
key = iterator.key();
current = iterator.current();
console.log(iterator.key() + ": " + iterator.current().toSource());
if (current.hasOwnProperty('type') && current.type !== '') {
if (current.hasOwnProperty('type') && current.type !== '') {
//console.log(iterator.current().type);
attributes = {};
$.each(current, function(key, value) {
if (that._validAttributes.indexOf(key) !== -1) {
attributes[key] = value;
}
});
//console.log(attributes);
}
//console.log("Prev: " + prev);
console.log("Level: " + level);
if (level == prev && level == 0) {
builder.append(current.type, attributes);
} else if (level == prev && level > 0) {
builder.add(current.type, attributes);
} else if (level < prev && level > 0) {
builder.parent().append(current.type, attributes);
} else if (level > prev && level > 0) {
builder.append(current.type, attributes);
} else {
// Do nothing
}
if (current.hasOwnProperty('label')) {
var label = builder.addBefore(builder.getCurrent(), 'label');
builder.text(current.label, label);
}
}
// Are there child nodes? If so, recurse...
if (iterator.hasChildren()) {
children = iterator.getChildren();
if (this.isCollection(key, current)) {
//console.log("I am a container");
}
//console.log("I have children");
console.log("-----------------------------");
hasType = (current.hasOwnProperty('type') && current.type !== '') ? current.type : false;
if (hasType) {
maxNesting = (this.isVoid(current.type)) ? true : false;
}
if (maxNesting === false) {
next = level;
if (hasType) {
this._prevLevel = level;
next = level + 1;
}
this.build(children, next);
}
} else {
if (current.hasOwnProperty('type') && current.type !== '') {
//console.log("I am childless");
console.log("-----------------------------");
}
}
iterator.next();
} while (iterator.hasNext());
if (current && current.hasOwnProperty('type') && current.type !== '') {
if (iterator.hasNext() === false) {
//console.log("<----- MOVING UP " + parseInt(level - prev) + " LEVELS ----->");
//console.log("Diff: " + parseInt(level - prev));
//console.log("Level: " + level);
//console.log("Prev: " + prev);
builder.parent();
this._prevLevel = level - prev;
}
}
},
getDocument: function () {
return this.getBuilder().getDocument();
}
});
return director.init(builder);
}
DOMBuilder(注入(inject)到 DocumentDirector——处理 DOM 操作):
DOMBuilder: function () {
var domBuilder = Object.create({
_document: {},
_rootNode: {},
_currentNode: {},
init: function (viewModel, domBuilder) {
var doc, rootNode;
this._document = doc = document.createDocumentFragment();
this._rootNode = rootNode = this.appendNode(doc, 'section');
this._currentNode = rootNode;
return this;
},
/* Generic methods
------------------ */
/**
* Returns the document
*
* @return DOM Node: The DOM document fragment
*/
getDocument: function () {
return this._document;
},
/**
* Returns the root node
*
* @return DOM Node: The root node
*/
getRoot: function () {
return this._rootNode;
},
/**
* Returns the current node
*
* @return DOM Node: The current node
*/
getCurrent: function () {
return this._currentNode;
},
/**
* Sets the current node
*
* @return DOM Node: The current node
*/
setCurrent: function (node) {
this._currentNode = node;
return this;
},
/**
* Returns the parent of the current node
*
* @return DOM Node: The parent node
*/
getParent: function () {
return this._currentNode.parentNode;
},
/**
* Creates and appends a node inside a specified parent
*
* @ref DOM Node: The insertion target for the new node
* @type String: A valid HTML5 element type
* @attributes Object: And object containing key-value pairs of attributes and values
*
* @return DOM Node: The newly created node
*/
appendNode: function (ref, type, attributes) {
var node = document.createElement(type);
ref.appendChild(node);
//this._currentNode = node;
return node;
},
/**
* Creates a node and inserts it before the specified element
*
* @ref DOM Node: A reference node for inserting the new node
* @type String: A valid HTML5 element type
* @attributes Object: And object containing key-value pairs of attributes and values
*
* @return DOM Node: The newly created node
*/
addBefore: function (ref, type, attributes) {
var node = document.createElement(type);
ref.parentNode.insertBefore(node, ref);
//this._currentNode = node;
return node;
},
/**
* Creates a node and inserts it after the specified element
*
* @parent DOM Node: A reference node for inserting the new node
* @type String: A valid HTML5 element type
* @attributes Object: And object containing key-value pairs of attributes and values
*
* @return DOM Node: The newly created node
*/
addAfter: function (ref, type, attributes) {
var node = document.createElement(type);
ref.parentNode.insertBefore(node, ref.nextSibling);
//this._currentNode = node;
return node;
},
/* Chainable methods
---------------------- */
/**
* Creates and appends a node inside a specified parent
*
* @type String: A valid HTML5 element type
* @attributes Object: And object containing key-value pairs of attributes and values
* @ref DOM Node: (Optional) The insertion target for the new node
*
* @return DOMBuilder: this
*/
append: function (type, attributes, ref) {
var parent, node;
ref = ref || this._currentNode;
node = document.createElement(type);
ref.appendChild(node);
this._currentNode = node;
if (attributes) {
// TODO: Use map instead
$.each(attributes, function (key, value) {
node.setAttribute(key, value);
});
}
return this;
},
/**
* Creates a node and inserts it after the specified element
*
* @type String: A valid HTML5 element type
* @attributes Object: And object containing key-value pairs of attributes and values
* @ref DOM Node: A reference node for inserting the new node
*
* @return DOMBuilder: this
*/
add: function (type, attributes, ref) {
var ref, node;
ref = ref || this._currentNode;
node = document.createElement(type);
//console.log(ref);
ref.parentNode.insertBefore(node, ref.nextSibling);
this._currentNode = node;
if (attributes) {
// TODO: Use map instead
$.each(attributes, function (key, value) {
node.setAttribute(key, value);
});
}
return this;
},
/**
* Creates a node and inserts it before the specified element
*
* @type String: A valid HTML5 element type
* @attributes Object: And object containing key-value pairs of attributes and values
* @ref DOM Node: A reference node for inserting the new node
*
* @return DOMBuilder: this
*/
before: function (type, attributes, ref) {
var ref, node;
ref = ref || this._currentNode;
node = document.createElement(type);
ref.parentNode.insertBefore(node, ref);
this._currentNode = node;
if (attributes) {
// TODO: Use map instead
$.each(attributes, function (key, value) {
node.setAttribute(key, value);
});
}
return this;
},
/**
* Sets the internal current node reference to the parent of the current node
*
* @return DOMBuilder: this
*/
parent: function () {
var ref, node;
ref = ref || this._currentNode;
this._currentNode = this._currentNode.parentNode;
return this;
},
/**
* Sets the text for a specified node
*
* @return DOMBuilder: this
*/
text: function (value, ref) {
var node = document.createTextNode(value);
ref.appendChild(node);
return this;
}
});
return domBuilder.init();
}
Bootstrap :
var formLayout = [
{
type: 'section',
id: 'header',
},
{
type: 'div',
id: 'center-pane',
forms: [
{
type: 'section',
id: 'claim-history',
label: 'Add Claim History',
templates: [
{
fieldsets: [
{
type: 'fieldset',
id: 'claim-history-details',
label: 'Details',
rows: [
{
type: 'div',
fields: [
{
// Any standard html5 attributes can be defined
id: 'MainContent_DetailsContent_LossDate',
name: 'LossDate',
label: 'Date of Loss',
type: 'datepicker', // Types: any standard HTML5 form element or Kendo UI widget
className: 'small',
data: {
role: 'datepicker', // Redundant proxy for type parameter
bind: {
value: 'datePickerValue' // Bind Kendo UI Datepicker
}
}
}
]
},
{
type: 'div',
fields: [
{
// Any standard html5 attributes can be defined
id: 'MainContent_DetailsContent_TypeOfLoss',
name: 'TypeOfLoss',
label: 'Type of Loss',
type: 'select', // This could be a combobox, really
className: ''
}
]
},
{
type: 'div',
fields: [
{
// Any standard html5 attributes can be defined
id: 'MainContent_DetailsContent_AtFaultPercentage',
name: 'AtFaultPercentage',
label: 'At Fault %',
type: 'text',
className: 'tiny'
},
{
// Any standard html5 attributes can be defined
id: 'MainContent_DetailsContent_CauseOfLoss',
name: 'CauseOfLoss',
label: 'Cause of Loss',
type: 'select',
className: ''
}
]
},
{
type: 'div',
fields: [
{
// Any standard html5 attributes can be defined
id: '',
name: '',
label: 'Charges Laid',
type: 'yesno',
className: '',
data: {
bind: {
source: 'yesno',
value: 'datePickerValue' // Bind Kendo UI Datepicker
}
}
},
{
// Any standard html5 attributes can be defined
id: 'MainContent_DetailsContent_ChargesLaid',
name: 'ChargesLaid',
label: 'Details',
type: 'textarea',
className: 'tiny'
}
]
}
],
},
{
type: 'fieldset',
id: 'claim-history-amounts',
label: 'Amounts',
rows: [
{
type: 'div',
fields: [
{
// Any standard html5 attributes can be defined
id: 'MainContent_DetailsContent_SecA',
name: 'SecA',
label: 'Sec A',
type: 'yesno',
className: 'tiny'
},
{
// Any standard html5 attributes can be defined
id: 'MainContent_DetailsContent_SecATotal',
name: 'SecATotal',
label: 'Sec A Total',
type: 'text',
className: 'small'
}
]
},
{
type: 'div',
fields: [
{
// Any standard html5 attributes can be defined
id: 'MainContent_DetailsContent_SecC',
name: 'SecC',
label: 'Sec C',
type: 'text',
className: 'tiny'
},
]
},
{
type: 'div',
fields: [
{
// Any standard html5 attributes can be defined
id: 'MainContent_DetailsContent_IgnoreReason',
name: 'IgnoreReason',
label: 'Ignore Reason',
type: 'select',
className: ''
}
]
}
],
},
{
type: 'fieldset',
id: 'claim-history-vehicle-driver',
label: 'Vehicle and Driver',
rows: [
{
type: 'div',
fields: [
{
// Any standard html5 attributes can be defined
id: 'MainContent_DetailsContent_ClaimVehicle',
name: 'ClaimVehicle',
label: 'Claim Vehicle',
type: 'select',
className: ''
}
]
}
],
} // END fieldset
] // END fieldsets
} // END template
] // END templates
} // END form
] // END forms
},
{
type: 'div',
id: 'left-pane'
},
{
type: 'div',
id: 'right-pane'
}
]; // END sections
var formBuilder = Object.create(App.Layout.Form.DOMBuilder());
var formDirector = Object.create(App.Layout.Form.DocumentDirector(formBuilder));
formDirector.build(formLayout);
document.getElementById("test").appendChild(formDirector.getDocument());
最佳答案
解决了——对于每个连续的递归，我应该追加第一个子节点(传入对象的)，然后添加剩余的节点。添加了一个 isFirst 变量来进行跟踪。
如果有人有兴趣的话，工作 fiddle ...... http://jsfiddle.net/blogshop/DSxft/
build: function (obj, level) {
var that = this,
builder = this.getBuilder(),
iterator = Object.create(App.Utilities.RecursiveIterator(obj)),
level,
key,
current,
attributes,
pair,
children,
isFirst = true,
hasType = false,
maxNesting = false;
do {
// Get the current node and build it
key = iterator.key();
current = iterator.current();
hasType = (current.hasOwnProperty('type') && current.type !== '') ? current.type : false;
if (hasType) {
maxNesting = (this.isVoid(current.type)) ? true : false;
attributes = {};
$.each(current, function(key, value) {
if (that._validAttributes.indexOf(key) !== -1) {
attributes[key] = value;
}
});
if (isFirst == true) {
builder.append(current.type, attributes);
isFirst = false;
} else {
builder.add(current.type, attributes)
}
// Prepend label to field
if (current.hasOwnProperty('label')) {
var label = builder.addBefore(builder.getCurrent(), 'label');
builder.text(current.label, label);
}
}
// Are there child nodes? If so, recurse...
if (iterator.hasChildren()) {
children = iterator.getChildren();
if (maxNesting === false) {
// Recurse
level = (hasType) ? level + 1 : level;
this.build(children, level);
}
}
// Move to the next node
iterator.next();
} while (iterator.hasNext());
if (current && current.hasOwnProperty('type') && current.type !== '') {
if (iterator.hasNext() === false) builder.parent();
}
},
关于javascript - 递归构建器嵌套问题，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/16680369/
24
4
0
我有一个 html 格式的表单: 我需要得到 JavaScript在value input 字段执行，但只能通过表单的 submit .原因是页面是一个模板所以我不控制它(不能有
我管理的论坛是托管软件，因此我无法访问源代码，我只能向页面添加 JavaScript 来实现我需要完成的任务。 我正在尝试用超链接替换所有页面上某些文本关键字的第一个实例。我还根据国家/地区代码对这些
我正在使用 JS 打开新页面并将 HTML 代码写入其中，但是当我尝试使用 document.write() 在新页面中编写 JS 时功能不起作用。显然，一旦看到 ，主 JS 就会关闭。用于即将打开的
提问不是为了解决问题，提问是为了更好地理解系统 专家!我知道每当你将 javascript 代码输入 javascript 引擎时，它会立即由 javascript 引擎执行。由于没有看过Engi
我在一个文件夹中有两个 javascript 文件。我想将一个变量的 javascript 文件传递到另一个。我应该使用什么程序？ 最佳答案 window.postMessage用于跨文档消息。使
我有一个练习，我需要输入两个输入并检查它们是否都等于一个。 如果是 console.log 正则 console.log false 我试过这样的事情: function isPositive(fir
我正在做一个Web应用程序，计划允许其他网站(客户端)在其页面上嵌入以下javascript: 我的网络应用程序位于 http://example.org 。 我不能假设客户端网站的页面有 JQue
目前我正在使用三个外部 JS 文件。 我喜欢将所有三个 JS 文件合而为一。 尽一切可能。我创建 aio.js 并在 aio.js 中 src="https://code.jquery.com/
我有例如像这样的数组: var myArray = []; var item1 = { start: '08:00', end: '09:30' } var item2 = {
所以我正在制作一个 Chrome 扩展，它使用我制作的一些 TamperMonkey 脚本。我想要一个“主”javascript 文件，您可以在其中包含并执行其他脚本。我很擅长使用以下行将其他 jav
我有 A、B html 和 A、B javascript 文件。 并且，如何将 A JavaScript 中使用的全局变量直接移动到 B JavaScript 中？ 示例 JavaScript) va
我需要将以下整个代码放入名为 activate.js 的 JavaScript 中。你能告诉我怎么做吗？ var int = new int({ seconds: 30, mark
我已经为我的 .net Web 应用程序创建了母版页 EXAMPLE1.Master。他们的 I 将值存储在 JavaScript 变量中。我想在另一个 JS 文件中检索该变量。 示例1.大师:-
是否有任何库可以用来转换这样的代码: function () { var a = 1; } 像这样的代码: function () { var a = 1; } 在我的浏览器中。因为我在 Gi
我收到语法缺失 ) 错误 $(document).ready(function changeText() { var p = document.getElementById('bidp
我正在制作进度条。它有一个标签。我想调整某个脚本完成的标签。在找到可能的解决方案的一些答案后，我想出了以下脚本。第一个启动并按预期工作。然而，第二个却没有。它出什么问题了？代码如下: HTML:
这里有一个很简单的问题，我简单的头脑无法回答:为什么我在外部库中加载时，下面的匿名和onload函数没有运行？我错过了一些非常非常基本的东西。 Library.js 只有一行:console.log(
我知道 javascript 是一种客户端语言，但如果实际代码中嵌入的 javascript 代码以某种方式与在控制台上运行的代码不同，我会尝试找到答案。让我用一个例子来解释它: 我想创建一个像 Mi
我如何将这个内联 javascript 更改为 Unobtrusive JavaScript？ 谢谢! 感谢您的回答，但它不起作用。我的代码是: PHP js文件 document.getElem
我正在寻找将简单的 JavaScript 对象“转储”到动态生成的 JavaScript 源代码中的最优雅的方法。 目的:假设我们有 node.js 服务器生成 HTML。我们在服务器端有一个对象x。
我是一名优秀的程序员,十分优秀！