Web Front-endJS TutorialHow to get and modify the background color and font color of the web page using js_javascript skillsHow to get and modify the background color and font color of the web page using js_javascript skills
The example in this article describes the method of obtaining and modifying the background color and font color of the web page using js. Share it with everyone for your reference, the details are as follows:
Get the background color and font color of the web page. The method is as follows:
Thought: What we get by getting the color attribute value is rgb color, which is not what we want, so we need to change the rgb color to hexadecimal color. First get the rgb color:
The code is as follows:
The obtained format is as follows: rgb(225, 22, 23); and then split:
The code is as follows:
Then split the (225,22,23) string (note: only number type can be converted, so use parseInt to force conversion type!):
The code is as follows:
for(var k = 0; k < 3; k++){
str[k] = parseInt(rgb .split(',')[k]).toString(16);//str 数组保存拆分后的数据
}
Final combination:
The code is as follows:
The complete code is as follows:
<!DOCTYPE html>
<html>
<head>
<title>getHexColor js/jQuery 获得十六进制颜色</title>
<meta charset="utf-8" />
<script type="text/javascript">
function getHexBgColor(){
var str = [];
var rgb = document.getElementById('color').style.backgroundColor.split('(');
for(var k = 0; k < 3; k++){
str[k] = parseInt(rgb[1].split(',')[k]).toString(16);
}
str = '#'+str[0]+str[1]+str[2];
document.getElementById('color').innerHTML = str;
}
function getHexColor(){
var str = [];
var rgb = document.getElementById('color').style.color.split('(');
for(var k = 0; k < 3; k++){
str[k] = parseInt(rgb[1].split(',')[k]).toString(16);
}
str = '#'+str[0]+str[1]+str[2];
document.getElementById('color').innerHTML = str;
}
</script>
<style type="text/css">
#color{
width: 200px;
height: 200px;
line-height: 200px;
text-align: center;
}
</style>
</head>
<body>
<div style="color: #88ee22; background-color: #ef8989;" id="color"></div>
<input onclick="getHexBgColor();" type="button" value="获得背景色" />
<input onclick="getHexColor();" type="button" value="获得字体颜色" />
</body>
</html>
The method to change the background color using javascript is as follows:
<body leftmargin=5 topmargin=0 onmouseover="document_onmouseover();"onclick="document_onclick();" id="all" >
<SCRIPT LANGUAGE="javascript">
var curObj= null;
var curObjmouseover=null;
function document_onclick() {
if(window.event.srcElement.tagName=='A'||window.event.srcElement.tagName=='FONT'){
if(curObjmouseover!=null)
curObjmouseover.style.background='';
if(curObj!=null)
curObj.style.background='';
curObj=window.event.srcElement;
curObj.style.background='#ff0099';
}
}
function document_onmouseover() {
if(window.event.srcElement.tagName=='A'||window.event.srcElement.tagName=='FONT'){
if(curObjmouseover!=null)
{curObjmouseover.style.background='';
curObjmouseover.style.color='#000000';}
if(curObj!=null)
curObj.style.background='';
curObjmouseover=window.event.srcElement;
curObjmouseover.style.background='#cccc00';
curObjmouseover.style.color='#ffffff';
}
}
</SCRIPT>
<div>
<a href='#'>来自脚本之家</a> </div>
<div> <a href='#'>来自脚本之家</a> </div>
I hope this article will be helpful to everyone in JavaScript programming.
Python vs. JavaScript: A Comparative Analysis for DevelopersMay 09, 2025 am 12:22 AMThe main difference between Python and JavaScript is the type system and application scenarios. 1. Python uses dynamic types, suitable for scientific computing and data analysis. 2. JavaScript adopts weak types and is widely used in front-end and full-stack development. The two have their own advantages in asynchronous programming and performance optimization, and should be decided according to project requirements when choosing.
Python vs. JavaScript: Choosing the Right Tool for the JobMay 08, 2025 am 12:10 AMWhether to choose Python or JavaScript depends on the project type: 1) Choose Python for data science and automation tasks; 2) Choose JavaScript for front-end and full-stack development. Python is favored for its powerful library in data processing and automation, while JavaScript is indispensable for its advantages in web interaction and full-stack development.
Python and JavaScript: Understanding the Strengths of EachMay 06, 2025 am 12:15 AMPython and JavaScript each have their own advantages, and the choice depends on project needs and personal preferences. 1. Python is easy to learn, with concise syntax, suitable for data science and back-end development, but has a slow execution speed. 2. JavaScript is everywhere in front-end development and has strong asynchronous programming capabilities. Node.js makes it suitable for full-stack development, but the syntax may be complex and error-prone.
JavaScript's Core: Is It Built on C or C ?May 05, 2025 am 12:07 AMJavaScriptisnotbuiltonCorC ;it'saninterpretedlanguagethatrunsonenginesoftenwritteninC .1)JavaScriptwasdesignedasalightweight,interpretedlanguageforwebbrowsers.2)EnginesevolvedfromsimpleinterpreterstoJITcompilers,typicallyinC ,improvingperformance.
JavaScript Applications: From Front-End to Back-EndMay 04, 2025 am 12:12 AMJavaScript can be used for front-end and back-end development. The front-end enhances the user experience through DOM operations, and the back-end handles server tasks through Node.js. 1. Front-end example: Change the content of the web page text. 2. Backend example: Create a Node.js server.
Python vs. JavaScript: Which Language Should You Learn?May 03, 2025 am 12:10 AMChoosing Python or JavaScript should be based on career development, learning curve and ecosystem: 1) Career development: Python is suitable for data science and back-end development, while JavaScript is suitable for front-end and full-stack development. 2) Learning curve: Python syntax is concise and suitable for beginners; JavaScript syntax is flexible. 3) Ecosystem: Python has rich scientific computing libraries, and JavaScript has a powerful front-end framework.
JavaScript Frameworks: Powering Modern Web DevelopmentMay 02, 2025 am 12:04 AMThe power of the JavaScript framework lies in simplifying development, improving user experience and application performance. When choosing a framework, consider: 1. Project size and complexity, 2. Team experience, 3. Ecosystem and community support.
The Relationship Between JavaScript, C , and BrowsersMay 01, 2025 am 12:06 AMIntroduction I know you may find it strange, what exactly does JavaScript, C and browser have to do? They seem to be unrelated, but in fact, they play a very important role in modern web development. Today we will discuss the close connection between these three. Through this article, you will learn how JavaScript runs in the browser, the role of C in the browser engine, and how they work together to drive rendering and interaction of web pages. We all know the relationship between JavaScript and browser. JavaScript is the core language of front-end development. It runs directly in the browser, making web pages vivid and interesting. Have you ever wondered why JavaScr
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment
Atom editor mac version download
The most popular open source editor
SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.
SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.
