Use JavaScript to determine whether the checkbox is selected
Use JavaScript to determine whether the checkbox is selectedHtmlCodeAs follows:
Javascript is as follows:VaR Len = Document. ordersform. Nid. length;VaR checked = false;
for (I = 0;
Javascript is a weak type language. Its function parameters do not specify the type. Its variables are overwritten together with the type during value assignment, so there is no type conversion problem. Is there a type conversion problem? Oh, there
A headache for JavaScript debugging:
(1) debug JavaScript on vs. NET 2005 &. NET Framework 2.0: debug with window. Alert () or debug with debugger to view variables;
(2) JavaScript debugging on J2EE: it is inconvenient to debug JavaScript on
(1) about "javascript definition object ":
Http://www.cnblogs.com/xtpgkxk/archive/2009/04/29/1446384.html
Describes the namespace and function constructor class in javascript, and constructs member functions using prototype, that is, the "mixed
First, you can review the "Object-oriented Thinking" (OOP). For details, refer to Baidu Baike: http://baike.baidu.com/view/125370.htm. then you can read JavaScript OOP:
(1) You can learn from the website:
JavaScript code for closing a window or JS for closing a page
JS automatically closes the window at regular intervals
Type 2: Click the JS button that does not prompt to close the window close the window
Third: js Code that is automatically
I took the time to write this evening. I was on duty in the Lab Building and continued to update the basic knowledge in the second lesson.
Naming rules
Readability
Normative-these two things are not easy to say. They are actually quite simple,
This is an article I wrote on csdn. Today I forgot the match feature and found that I had to learn something better.
The difference between the exec and match methods has been somewhat confusing for a long time. Read the help document today (the
1 // remove the left space;
2 function ltrim (s ){
3 return s. replace (/^ \ s */,"");
4}
5 // remove the right space;
6 function rtrim (s ){
7 return s. replace (/\ s * $ /,"");
8}
9 // remove left and right spaces;
10 function trim (s ){
11 return
1. Download the MS Script Debugger from the Microsoft website and install it. Here is:Http://download.microsoft.com/download/winscript56/install/1.0a/NT45XP/EN-US/scd10en.exe
2. Modify IE settings:IE options --> advanced, two options are checked by
The created node does not know how to delete it at the moment... It took a lot of time
For (var I = 0; I Var li_button = document. createElement ("li ");Li_button.className = "button ";Var li_button_a = document. createElement ("");Li_button_a.id =
JavaScript has a large number of asynchronous operations. First, you can see what in JS will generate Asynchronization (Here we only consider the situation in the browser ):
Ajax (XMLHttpRequest)
Image Tag, Script Tag, iframe (similar principle)
In the previous lecture, we talked about how to make static characters dynamic. Today we will talk about how to move people, because this lecture involves the content of the previous lecture, so I wrote the link of the previous lecture below.
Http://
Position of the previous chapters:
Develop "Three Kingdoms Cao Zhuan" with Javascript-component development (4)-use map blocks to build large maps
Http://www.cnblogs.com/ducle/archive/2012/09/23/2699066.html
Develop "Three Kingdoms Cao Zhuan" with
1. variable definition // common syntax var a = 0; var B = 1; var c = 'xxx'; // recommended syntax var a = 0, B = 1, c = 'xxx'; 2. try to use the literal. // var obj = new Object (); obj. a = 'a'; obj. B = 'bb'; obj. c = 'cc'; var arr = new Array ();
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