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Can I assign document.getElementById to variable in javascript [duplicate]

由 允我心安 提交于 2019-12-08 02:37:34
问题 This question already has answers here : Why can't I directly assign document.getElementById to a different function? (5 answers) Closed 2 years ago . I think document.getElementById is a function. So this function can be assigned to variable. Like this var hello = document.getElementById; console.log(hello('hello'))); <div id="hello">hello</div> But It occurred error like this: Uncaught TypeError: Illegal invocation 回答1: The issue is context. When you take the reference to the function, you

Wrap the document or window object to check scroll value?

由 风格不统一 提交于 2019-12-07 19:10:50
问题 To check the scroll values of the page I used to wrap the window object with jQuery, but when scrolling, the target element of the scroll event results to be the document object: $(window).scroll(function(e) { alert('Scrolling ' + e.target); }); What is the right object to wrap to check the scroll values? I know the difference between them (a window can contain multiple frames thus many documents), but for a single document context I see the scroll values coincide: alert($(window).scrollTop()

Relevance of document to multiple keywords

由 你。 提交于 2019-12-07 16:26:15
问题 Suppose D is a textual document, and K = < k1, ..., kN > represents a set of terms contained in the document. For instance: D = "What a wonderful day, isn't it?" K = <"wonderful","day"> My objective is to see if document D talks about all the words in K as a whole. For instance: D = "The Ebola in Africa is spreading at high speed" K = <"Ebola","Africa"> is a case in which D is strongly related to K , while: D = "NEWS 1: Ebola is a dangerous disease that is causing thousands of deaths. Many

MVC in a Cocoa document-based application

由 老子叫甜甜 提交于 2019-12-07 13:01:05
问题 I'm going through a refactoring and reorganization of my application at the moment. I've realized that some of the separation between models and views, and their controllers has diminished and I wish to do some cleaning up. I have several key classes used in my app: NSPersistentDocument, NSWindowController, and a model class. The NSPersistentDocument class acts as a "model-controller"; it owns an instance of the model class, and manages all interactions with the model. The NSWindowController

Creating instances of predefined objects in Javascript

由 老子叫甜甜 提交于 2019-12-07 09:47:39
问题 I know that in Javascript we can create ,instatnces of object like var ins = new myObject(); I know that ,window ,document etc are predefined objects in javascript..Can we create new instances of these objects.? For ex: Is var inss = new document(); possible? 回答1: Don't confuse objects with constructors (or classes in most OOP languages). In JavaScript, you create objects by calling constructor functions using the new operator: function MyObject() { } var obj = new MyObject(); Afterwards you

Determining the width of a webpage in inches

由 北城以北 提交于 2019-12-07 02:15:15
问题 I have a CSS stylesheet that uses media queries to change how a page is displayed based on how many inches it is in width (for instance, if it is smaller than 4 inches or being displayed on a handheld device, it assumes a more mobile-friendly LAF). The problem I have is with its content. On the homepage, there is a dock-style interface that dynamically changes height based on the current height and width of the window so that the text and items never leave the screen. However, my JS that

List of documents in Entire Sharepoint Site

由 北城以北 提交于 2019-12-06 19:39:27
I am trying to get a list of all documents within my SharePoint Site, owner and date last modified. It is a SharePoint 2010 Enterprise environment. It's a site which has many subsites. All solutions I have tried only allow me to get documents at that specific site level and not subsites. I must admit, I can get the required information by querying the SQL DB directly but don't want to go down this path, as it's unsupported by MS Any help would be appreciated. Isaac E. Krauss You can get this information quite easy by using Powershell, you just need to iterate through all subsites and document

结合Dynamic .NET TWAIN和Jetty，实现基于网页的TWAIN文件扫描

由 馋奶兔 提交于 2019-12-06 16:34:34
网页TWAIN扫描是通过多种技术结合实现的，看下流程图： 参考原文： Web-based Document Imaging Capture with .Net TWAIN and Jetty 准备工作 阅读： 如何通过jni4net，在Java应用中调用C#接口 使用Jetty搭建Java Websocket Server，实现图像传输 如何运行 在Eclipse中运行Java Application，选择UIMain 当这个窗口启动的时候，Websocket Server已经初始化完成。 Load：加载本地图片 Send：把图片推送到网页客户端 Scan：通过扫描仪扫描文件，把图像自动发送到网页客户端 在Chrome中选择一个扫描仪源 显示TWAIN扫描文件图像 TWAIN网页扫描流程解析 首先把所有相关的库(DLL & Jar)导入到Eclipse工程中： 结合准备工作中两篇文章的代码， 创建一个类 SourceManager ： package com.data; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.File; import java.util.ArrayList; import javatwain.DotNetScanner;

Wrap the document or window object to check scroll value?

由 荒凉一梦 提交于 2019-12-06 15:24:31
To check the scroll values of the page I used to wrap the window object with jQuery, but when scrolling, the target element of the scroll event results to be the document object: $(window).scroll(function(e) { alert('Scrolling ' + e.target); }); What is the right object to wrap to check the scroll values? I know the difference between them (a window can contain multiple frames thus many documents), but for a single document context I see the scroll values coincide: alert($(window).scrollTop() === $(document).scrollTop()); EDIT: It also happens with native JavaScript: window.onscroll = function

Saving a document to SharePoint brings up “Web File Properties” dialog with incorrect metadata

由 人走茶凉 提交于 2019-12-06 14:23:33
问题 Situation: A custom "Master Document" content type inherits from Document The "Master Document" content type has five additional choice fields There are five custom "Document Template" content types that inherit from the "Master Document" content type Each of the "Document Template" content types uses a different Word document template (.dot) file Each of the "Document Template" content types have been added to a document library Problem: I click on a document in the library Document opens up
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