JavaScript

In JavaScript, Substring extraction is mainly implemented through one of the three methods: Slice, Substring, and Substr.Copy codeThe Code is as follows: // slice// Syntax: string. slice (start [, stop])"Good news, everyone! ". Slice (5, 9 );//

Sooner or later, you need to use the abstract results of other developers-that is, you rely on others' code. I like to rely on free (no dependency) modules, but that is hard to implement. Even the beautiful black box components you have created will

Common ideas of js drag1. Use onmousedown, onmousemove, and onmouseup to simulate the events () that start dragging, dragging, and dragging respectively ().If the Mobile Phone Touch event is ontouchstart, ontouchmove, and ontouchend, respectively.2.

The previous requirement was to determine whether the webpage in the iframe was scrolled to the bottom to trigger the event. I found a lot of information on the Internet, which is said to be under the current page. I simply studied it myself, the

In fact, disabling is not completely disabled. By default, the back button is clicked in each browser. As long as normal text input can be used, the back button is disabled in other cases. Let's look at the jquery implementation code:Copy codeThe

Today I learned about the overall scaling effect of my QQ mail webpage. The original implementation method is very simple. The Code is as follows:Copy codeThe Code is as follows: test page try to change the window size. what do you find?

Recently, I was working on a project. The function has been implemented and the user suddenly requested that the header be floating (because the content is displayed on the same page and the column header is invisible when scrolling ). Because

# Talking About browser compatibility issues-(3) organizing other issues # preface in addition to summing up the compatibility problems encountered in our actual projects, we also need to collect these problems through the network and other means,

When I was a beginner at ExtJs, I wanted to make a project like this: I used EasyUi to click the button to bring up the Dialog box. There is a Dialog in EasyUi, which is very convenient to use, but now I have moved to ExtJs and found that there is

A browser incompatibility problem encountered in the project:In IE and Firefox, calling the js function of the Child Window using the name of the child window in the parent window of the ifame framework page is good, and it is difficult to make it

Some colleagues encountered a strange problem at work, which is related to floating point calculation. The Code is as follows: 1 # include 2 using namespace std; 3 4 int main () 5 { 6 double s = 6.0; 7 double e = 0.2; 8 9 cout (S/e) 10 return

Today, when I write code, I find it very error-prone. When declaring variables, we often have different API definitions for different browsers, and then use the following statement to determine which attribute, for example:Copy codeThe Code is as

Our goal is to write a reusable modular API for creating and managing the on-site editing domain. It refers to the form field with some buttons after a common text on the webpage is clicked, so that users can edit the text in place. Concept 1. hide

Html references derective: Controller settings: $ Scope. dtOptions = {"bProcessing": true, "bServerSide": true, iDisplayLength: 5, sAjaxSource: 'http: // 10.188.192.200: 8080/employee/page? DeptId = '+ data, sAjaxDataProp: 'aadata', "sDom ": " r>

In project development, if we use the prompt dialog box that comes with javascript, it is not very beautiful, so we usually define some dialogs by ourselves. Here I click the button to pop up a login window, click this window to implement the

The ID of the seajs github module is clear. However, it is not comprehensive, especially when you need to hand-write [module ID] and [module dependency], or write your own automated tools for transport (ps: spm seems to be not very adaptable and

The purpose is to assign a value directly if a variable has been declared and has not been assigned a value, and the scope of the variable cannot be changed.If it is not stated, redeclare it,The common method for searching on the internet is if

In some small projects that do not have high requirements, you can use some technologies that are not common and not new, but can actually implement functions well. In this way, the system is not complex to display and can be conveniently maintained.

In short, the Destructor are used to complete special work when the object is closed. For example, I wrote the upper case that a file is opened while instantiating, but when will it be closed, close it when you use it, so the Destructor closes it

View Code directlyCopy codeThe Code is as follows: In this example, the onsubmit function is the function triggered before the form is submitted.Copy codeThe Code is as follows:Function checkform (){Var value = $ ("input [name = 'payway']: checked").