search
HomeWeb Front-endJS TutorialSimple code to implement mask layer using jQuery CSS compatible with mainstream browsers_jquery

Click "Register" on the page, and a layer of black mask with opacity will appear; above the mask layer is the registration box; at this time, other elements on the page except the registration box cannot be clicked; click "" on the registration box Just take a stroll" and the mask disappears.

Preview address:

http://jsfiddle.net/p2x3c7df/embedded/result/

Key Points:

1. The registration box is always centered horizontally and vertically, including when scrolling the page up and down with the mouse wheel, zooming the page, and resizing the browser window

Mainly controlled by CSS, the width and height of the registration box have been determined (620*420px). First use position:fixed to make it absolutely positioned relative to the browser window; then make it vertically centered: top:50%; left:50%; margin:-210px 0 0 -310px;

2. When zooming the page and resizing the browser window, the mask layer must always cover the entire document and fill the entire browser visible window as well as the parts that need to be scrolled to browse. It needs to be compatible with different kernel browsers such as Chrome and IE. device;

Two important properties: js’s window.screen.availHeight and jQuery’s $(document.body).outerHeight(true). window.screen.availHeight refers to the height of the available working area of ​​the screen, and $(document.body).outerHeight(true) refers to the total width of the document body of the current window of the browser, including border padding margin. window.screen.availHeight is mainly used for IE (11) to ensure that the mask layer can still fill the browser window after scaling the page.

3. When the mask layer appears, the page can still be scrolled up and down, but other elements on the page except the login box cannot be operated

Code:

HTML (need to test high enough documents):

Copy code The code is as follows:


   
   

   
   
   
       

           
                注册
           

       

        The Suicide.
        Meanwhile Monte Cristo had also returned to town with Emmanuel and Maximilian. Their return was cheerful. Emmanuel did not conceal his joy at the peaceful termination of the affair, and was loud in his expressions of delight. Morrel, in a corner of the carriage, allowed his brother-in-law's gayety to expend itself in words, while he felt equal inward joy, which, however, betrayed itself only in his countenance. At the Barriere du Trone they met Bertuccio, who was waiting there, motionless as a sentinel at his post. Monte Cristo put his head out of the window, exchanged a few words with him in a low tone, and the steward disappeared. "Count," said Emmanuel, when they were at the end of the Place Royale, "put me down at my door, that my wife may not have a single moment of needless anxiety on my account or yours."
        "If it were not ridiculous to make a display of our triumph, I would invite the count to our house; besides that, he doubtless has some trembling heart to comfort. So we will take leave of our friend, and let him hasten home."
        "Stop a moment," said Monte Cristo; "do not let me lose both my companions. Return, Emmanuel, to your charming wife, and present my best compliments to her; and do you, Morrel, accompany me to the Champs Elysees."
        "Willingly," said Maximilian; "particularly as I have business in that quarter."
        "Shall we wait breakfast for you?" asked Emmanuel.
        "No," replied the young man. The door was closed, and the carriage proceeded. "See what good fortune I brought you!" said Morrel, when he was alone with the count. "Have you not thought so?"
        "Yes," said Monte Cristo; "for that reason I wished to keep you near me."
        "It is miraculous!" continued Morrel, answering his own thoughts.
        "What?" said Monte Cristo.
        "What has just happened."
        "Yes," said the Count, "you are right -- it is miraculous."
        "For Albert is brave," resumed Morrel.
        "Very brave," said Monte Cristo; "I have seen him sleep with a sword suspended over his head."

        "She is going to leave her house," said the steward.
        "And her son?"
        "Florentin, his valet, thinks he is going to do the same."
        "Come this way." Monte Cristo took Bertuccio into his study, wrote the letter we have seen, and gave it to the steward. "Go," said he quickly. "But first, let Haidee be informed that I have returned."
        "Here I am," said the young girl, who at the sound of the carriage had run down-stairs and whose face was radiant with joy at seeing the count return safely. Bertuccio left. Every transport of a daughter finding a father, all the delight of a mistress seeing an adored lover, were felt by Haidee during the first moments of this meeting, which she had so eagerly expected. Doubtless, although less evident, Monte Cristo's joy was not less intense. Joy to hearts which have suffered long is like the dew on the ground after a long drought; both the heart and the ground absorb that beneficent moisture falling on them, and nothing is outwardly apparent.
        Monte Cristo was beginning to think, what he had not for a long time dared to believe, that there were two Mercedes in the world, and he might yet be happy. His eye, elate with happiness, was reading eagerly the tearful gaze of Haidee, when suddenly the door opened. The count knit his brow. "M. de Morcerf!" said Baptistin, as if that name sufficed for his excuse. In fact, the count's face brightened.
        "Which," asked he, "the viscount or the count?"
        "The count."
        "Oh," exclaimed Haidee, "is it not yet over?"
        "I know not if it is finished, my beloved child," said Monte Cristo, taking the young girl's hands; "but I do know you have nothing more to fear."
        "But it is the wretched" --
        "That man cannot injure me, Haidee," said Monte Cristo; "it was his son alone that there was cause to fear."
        "And what I have suffered," said the young girl, "you shall never know, my lord." Monte Cristo smiled. "By my father's tomb," said he, extending his hand over the head of the young girl, "I swear to you, Haidee, that if any misfortune happens, it will not be to me."
        The door was wide open, a hackney-coach was standing in the middle of the yard -- a strange sight before so noble a mansion; the count looked at it with terror, but without daring to inquire its meaning, he rushed towards his apartment. Two persons were coming down the stairs; he had only time to creep into an alcove to avoid them. It was Mercedes leaning on her son's arm and leaving the house. They passed close by the unhappy being, who, concealed behind the damask curtain, almost felt Mercedes dress brush past him, and his son's warm breath, pronouncing these words, -- "Courage, mother! Come, this is no longer our home!" The words died away, the steps were lost in the distance. The general drew himself up, clinging to the curtain; he uttered the most dreadful sob which ever escaped from the bosom of a father abandoned at the same time by his wife and son. He soon heard the clatter of the iron step of the hackney-coach, then the coachman's voice, and then the rolling of the heavy vehicle shook the windows. He darted to his bedroom to see once more all he had loved in the world; but the hackney-coach drove on and the head of neither Mercedes nor her son appeared at the window to take a last look at the house or the deserted father and husband. And at the very moment when the wheels of that coach crossed the gateway a report was heard, and a thick smoke escaped through one of the panes of the window, which was broken by the explosion.
        The door was wide open, a hackney-coach was standing in the middle of the yard -- a strange sight before so noble a mansion; the count looked at it with terror, but without daring to inquire its meaning, he rushed towards his apartment. Two persons were coming down the stairs; he had only time to creep into an alcove to avoid them. It was Mercedes leaning on her son's arm and leaving the house. They passed close by the unhappy being, who, concealed behind the damask curtain, almost felt Mercedes dress brush past him, and his son's warm breath, pronouncing these words, -- "Courage, mother! Come, this is no longer our home!" The words died away, the steps were lost in the distance. The general drew himself up, clinging to the curtain; he uttered the most dreadful sob which ever escaped from the bosom of a father abandoned at the same time by his wife and son. He soon heard the clatter of the iron step of the hackney-coach, then the coachman's voice, and then the rolling of the heavy vehicle shook the windows. He darted to his bedroom to see once more all he had loved in the world; but the hackney-coach drove on and the head of neither Mercedes nor her son appeared at the window to take a last look at the house or the deserted father and husband. And at the very moment when the wheels of that coach crossed the gateway a report was heard, and a thick smoke escaped through one of the panes of the window, which was broken by the explosion.
   


HTML

CSS:

复制代码 代码如下:

a{ text-decoration:none; color:#fff;}
#rbox{

    width:620px;
    height:420px;
    position:fixed;
    top:50%;
    left:50%;
    margin:-210px 0 0 -310px;
    border-radius:8px; /*圆角*/
    background-color:#999;
    z-index:3;
    display:none;   
}

.go{

    position:absolute;
    right: 10px;
    top: 10px;
    padding: 5px 12px;
    background: rgba(0,0,0,.4);
    box-shadow: 0 0 0 2px rgba(255,255,255,.4);
    color: #fff;
    border-radius: 26px;
}

#mask{

    background-color:#000;
    position:absolute;
    top:0;
    left:0;
    display:none;
    z-index:2;
}

#register{ z-index:1; color:blue;}
.content{ width:800px; height:auto; margin:0 auto;}

JS:

复制代码 代码如下:

$(function(){
 
//Click to register
$("#register").click(function(){
 
If(window.screen.availHeight > $(document.body).outerHeight(true)){
                             
//When the height of the available working area of ​​the screen > the total height of the document body of the current window of the browser including border padding margin (when zooming)
               $("#mask").show().css({"opacity":"0.5","width":"100%","height":window.screen.availHeight});
         }else{
                             
$("#mask").show().css({"opacity":"0.5","width":"100%","height":$(document.body).outerHeight(true)});
                                                                                                  $("#rbox").show();                                                           });

//Adjust the width and height of the mask according to changes in the browser's visible window so that the mask fills the browser

$(window).resize(function(){                                
//Change the mask width and height according to changes in the browser window, so that the mask fills the entire browser
If($("#mask").css("width")!=0){

                                                                                                                                                                                                                                           $("#mask").css(""width",""100%"); //The width can also be judged if necessary
if(window.screen.availHeight > $(document.body).outerHeight(true)){

                                                                                       $("#mask").css({"opacity":"0.5","width":"100%","height":window.screen.availHeight});

               }else{

                                                                                       $("#mask").css({"opacity":"0.5","width":"100%","height":$(document.body).outerHeight(true)});

            }
}
});

$(".go").click(function(){
 
          $("#mask").hide();
          $("#rbox").hide();
});

});




This function is completed.

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Python and JavaScript: Understanding the Strengths of EachPython and JavaScript: Understanding the Strengths of EachMay 06, 2025 am 12:15 AM

Python 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  ?JavaScript's Core: Is It Built on C or C ?May 05, 2025 am 12:07 AM

JavaScriptisnotbuiltonCorC ;it'saninterpretedlanguagethatrunsonenginesoftenwritteninC .1)JavaScriptwasdesignedasalightweight,interpretedlanguageforwebbrowsers.2)EnginesevolvedfromsimpleinterpreterstoJITcompilers,typicallyinC ,improvingperformance.

JavaScript Applications: From Front-End to Back-EndJavaScript Applications: From Front-End to Back-EndMay 04, 2025 am 12:12 AM

JavaScript 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?Python vs. JavaScript: Which Language Should You Learn?May 03, 2025 am 12:10 AM

Choosing 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 DevelopmentJavaScript Frameworks: Powering Modern Web DevelopmentMay 02, 2025 am 12:04 AM

The 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 BrowsersThe Relationship Between JavaScript, C , and BrowsersMay 01, 2025 am 12:06 AM

Introduction 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

Node.js Streams with TypeScriptNode.js Streams with TypeScriptApr 30, 2025 am 08:22 AM

Node.js excels at efficient I/O, largely thanks to streams. Streams process data incrementally, avoiding memory overload—ideal for large files, network tasks, and real-time applications. Combining streams with TypeScript's type safety creates a powe

Python vs. JavaScript: Performance and Efficiency ConsiderationsPython vs. JavaScript: Performance and Efficiency ConsiderationsApr 30, 2025 am 12:08 AM

The differences in performance and efficiency between Python and JavaScript are mainly reflected in: 1) As an interpreted language, Python runs slowly but has high development efficiency and is suitable for rapid prototype development; 2) JavaScript is limited to single thread in the browser, but multi-threading and asynchronous I/O can be used to improve performance in Node.js, and both have advantages in actual projects.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

WebStorm Mac version

WebStorm Mac version

Useful JavaScript development tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

DVWA

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use