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Javascript tutorial

A brief analysis of the difference between document.ready and window.onload

Javascript can only perform certain operations on DOM elements after they have been defined. This problem is described in detail in the article "Javascript Execution Sequence" //www.VeVB.COm/article/44577.htm. jQuery uses document.rea

2025-01-24
Discuss the loading order of html and javascript in browsers

I swept through JavaScript a while ago, and I felt good about myself at the time. Now that I think about it, I feel like it’s nothing. Today's task is to study the chapter on the life cycle of the client page in asp.net ajax. However, I was a bit conf

2025-01-24
Example of js operation table (personal experience)

I remember that I encountered such a problem during an interview: There is a form, and then there are 4 input boxes and a merge button. The input box is like this, from which row to which row, and from which column to which column. , and then click the bu

2025-01-24
Interpretation of examples of methods to execute arbitrary html code in javascript

In today's code, I accidentally discovered that the eval() function of javascript cannot execute html code, for example: Copy the code as follows: <script>eval('<li>hehe</li>')</script> The code will not be executed, but it can be executed if changed

2025-01-24
JS and C# encoding and decoding

There are 69 characters that are not encoded by escape: *, +, -, ., /, @, _, 0-9, az, and there are 82 characters that are not encoded by A-ZencodeURI: !, #, $, &, ', (, ),*,+,,,-,.,/,:,;,=,?,@,_,~,0-9,az,A-ZencodeURI

2025-01-24
Detailed explanation of how to avoid accuracy errors in numerical calculations using JavaScript

If I ask you what is 0.1 + 0.2? You may give me a blank look, 0.1 + 0.2 = 0.3 Ah, do you still need to ask? Even children in kindergarten can answer such a pediatric question. But you know, the same problem in a programming language may not be as simple a

2025-01-24
Three ways to use the javascript confirmation box

The first method: It is very easy to use. Only after confirmation can the download address page be opened. The principle is also relatively clear. Mainly used to confirm deletion of a single message. Copy the code code as follows:<SCRIPT LANGUAGE=javascri

2025-01-24
How to insert html content and text content at a specified place

dhtml provides two methods to add, insertAdjacentHTML and insertAdjacentText insertAdjacentHTML method: insert html tag statement at the specified place. Prototype: insertAdjacentHTML(swh

2025-01-24
Simple sample code to compare two time sizes in JS

As shown below: Copy the code The code is as follows: if (new Date(strSD.replace(//-/g, '//')) > new Date(strED.replace(//-/g, '//')) ) { //The start time is greater than the end time alert("Time selection

2025-01-24
js example of precision processing of decimal addition

Copy the code as follows: zf = accAdd(zf, parseFloat("12.11")); //Addition function, used to obtain accurate addition results //Explanation: The addition result of JavaScript will have errors when adding two floating point numbers. will be more

2025-01-24
An in-depth analysis of enumeration functions in JavaScript

Since the Microsoft AJAX Library has greatly expanded JavaScript, the commonly used function of enumeration has of course been added. This time we will discuss the enumeration function of JavaScript. Since the example is very simple, just look at the HTML

2025-01-24
Example of using window.onload append function

Copy the code code as follows:<script type="text/javascript"> function tt1(){ alert('tt1') ; } function tt2(){ alert('tt2') ; } function tt3

2025-01-24
Usage and difference analysis of innerHTML, outerHTML, innerText, outerText

<p><div id="div" style="background-color:#ff9966;border:1px #ff0000 dashed;"><span>This is a layer</span></div>

2025-01-24
Use js to determine the value of the TextBox control and then trigger the event

Copy the code code as follows: <script language="javascript" type="text/javascript">var firsty;//最开始的加载页面时年和月var firstm;var secondy;//当onchang

2025-01-24
The background of the pop-up layer implemented by javascript is grayed out - simulation (easyui dialog)

The page is rather ugly and only functions are implemented. ^ ^ Copy the code code as follows:<title> Imitate the effect of easyui dialog</title><script> //取得页面元素 var getElement = function() { return doc

2025-01-24

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