搜索
首页web前端js教程兼容主流浏览器的jQuery+CSS 实现遮罩层的简单代码_jquery

在页面点击"注册",出现一层有不透明度的黑色遮罩;遮罩层的上方是注册框;此时无法点击页面上除注册框外的其他元素;点击注册框上的"随便逛逛",遮罩层消失。

预览地址:

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

要点:

1.注册框始终水平、垂直居中,包括鼠标滚轮上下滚动页面、缩放页面和调整浏览器窗口大小时

主要由CSS控制,注册框的宽度和高度都已经确定( 620*420px ),首先使用position:fixed来使它相对于浏览器窗口绝对定位;然后使它垂直居中:top:50%; left:50%; margin:-210px 0 0 -310px;

2.当缩放页面和调整浏览器窗口大小时,遮罩层需始终覆盖整个文档和充满整个浏览器可视窗口以及需要滚动才能浏览到的部分,需要兼容Chrome和IE等不同内核浏览器;

两个重要的属性:js的window.screen.availHeight和jQuery的$(document.body).outerHeight(true)。window.screen.availHeight指屏幕可用工作区域的高,$(document.body).outerHeight(true)指浏览器当前窗口文档body的总宽度 包括border padding margin。window.screen.availHeight主要用于IE(11)缩放页面后,遮罩层仍能充满浏览器窗口。

3.遮罩层出现时,页面仍可以上下滚动,但是无法操作页面中除登陆框外的其他元素

代码:

 HTML( 需测试足够高的文档 ):

复制代码 代码如下:


   
   

   
   
   
       

           
                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(){
   
    //点击注册
    $("#register").click(function(){
   
        if(window.screen.availHeight > $(document.body).outerHeight(true)){
       
            //当屏幕可用工作区域的高度 > 浏览器当前窗口文档body的总高度 包括border padding margin时( 缩放时 )
            $("#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();       
    });   


    //根据浏览器可视窗口的变化调整遮罩的宽度和高度,使遮罩充满浏览器
    $(window).resize(function(){           

        //根据浏览器窗口变化改变遮罩宽度和高度,使遮罩充满整个浏览器   
        if($("#mask").css("width")!=0){

            $("#mask").css("width","100%"); //必要时可对宽度也作出判断      

            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();
    });
});

至此功能完成。

声明
本文内容由网友自发贡献,版权归原作者所有,本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容,请联系admin@php.cn
Python和JavaScript:了解每个的优势Python和JavaScript:了解每个的优势May 06, 2025 am 12:15 AM

Python和JavaScript各有优势,选择取决于项目需求和个人偏好。1.Python易学,语法简洁,适用于数据科学和后端开发,但执行速度较慢。2.JavaScript在前端开发中无处不在,异步编程能力强,Node.js使其适用于全栈开发,但语法可能复杂且易出错。

JavaScript的核心:它是在C还是C上构建的?JavaScript的核心:它是在C还是C上构建的?May 05, 2025 am 12:07 AM

javascriptisnotbuiltoncorc; saninterpretedlanguagethatrunsonenginesoftenwritteninc.1)javascriptwasdesignedAsalightweight,解释edganguageforwebbrowsers.2)Enginesevolvedfromsimpleterterterpretpreterterterpretertestojitcompilerers,典型地提示。

JavaScript应用程序:从前端到后端JavaScript应用程序:从前端到后端May 04, 2025 am 12:12 AM

JavaScript可用于前端和后端开发。前端通过DOM操作增强用户体验,后端通过Node.js处理服务器任务。1.前端示例:改变网页文本内容。2.后端示例:创建Node.js服务器。

Python vs. JavaScript:您应该学到哪种语言?Python vs. JavaScript:您应该学到哪种语言?May 03, 2025 am 12:10 AM

选择Python还是JavaScript应基于职业发展、学习曲线和生态系统:1)职业发展:Python适合数据科学和后端开发,JavaScript适合前端和全栈开发。2)学习曲线:Python语法简洁,适合初学者;JavaScript语法灵活。3)生态系统:Python有丰富的科学计算库,JavaScript有强大的前端框架。

JavaScript框架:为现代网络开发提供动力JavaScript框架:为现代网络开发提供动力May 02, 2025 am 12:04 AM

JavaScript框架的强大之处在于简化开发、提升用户体验和应用性能。选择框架时应考虑:1.项目规模和复杂度,2.团队经验,3.生态系统和社区支持。

JavaScript,C和浏览器之间的关系JavaScript,C和浏览器之间的关系May 01, 2025 am 12:06 AM

引言我知道你可能会觉得奇怪,JavaScript、C 和浏览器之间到底有什么关系?它们之间看似毫无关联,但实际上,它们在现代网络开发中扮演着非常重要的角色。今天我们就来深入探讨一下这三者之间的紧密联系。通过这篇文章,你将了解到JavaScript如何在浏览器中运行,C 在浏览器引擎中的作用,以及它们如何共同推动网页的渲染和交互。JavaScript与浏览器的关系我们都知道,JavaScript是前端开发的核心语言,它直接在浏览器中运行,让网页变得生动有趣。你是否曾经想过,为什么JavaScr

node.js流带打字稿node.js流带打字稿Apr 30, 2025 am 08:22 AM

Node.js擅长于高效I/O,这在很大程度上要归功于流。 流媒体汇总处理数据,避免内存过载 - 大型文件,网络任务和实时应用程序的理想。将流与打字稿的类型安全结合起来创建POWE

Python vs. JavaScript:性能和效率注意事项Python vs. JavaScript:性能和效率注意事项Apr 30, 2025 am 12:08 AM

Python和JavaScript在性能和效率方面的差异主要体现在:1)Python作为解释型语言,运行速度较慢,但开发效率高,适合快速原型开发;2)JavaScript在浏览器中受限于单线程,但在Node.js中可利用多线程和异步I/O提升性能,两者在实际项目中各有优势。

See all articles

热AI工具

Undresser.AI Undress

Undresser.AI Undress

人工智能驱动的应用程序,用于创建逼真的裸体照片

AI Clothes Remover

AI Clothes Remover

用于从照片中去除衣服的在线人工智能工具。

Undress AI Tool

Undress AI Tool

免费脱衣服图片

Clothoff.io

Clothoff.io

AI脱衣机

Video Face Swap

Video Face Swap

使用我们完全免费的人工智能换脸工具轻松在任何视频中换脸!

热工具

PhpStorm Mac 版本

PhpStorm Mac 版本

最新(2018.2.1 )专业的PHP集成开发工具

EditPlus 中文破解版

EditPlus 中文破解版

体积小,语法高亮,不支持代码提示功能

ZendStudio 13.5.1 Mac

ZendStudio 13.5.1 Mac

功能强大的PHP集成开发环境

Dreamweaver Mac版

Dreamweaver Mac版

视觉化网页开发工具

MinGW - 适用于 Windows 的极简 GNU

MinGW - 适用于 Windows 的极简 GNU

这个项目正在迁移到osdn.net/projects/mingw的过程中,你可以继续在那里关注我们。MinGW:GNU编译器集合(GCC)的本地Windows移植版本,可自由分发的导入库和用于构建本地Windows应用程序的头文件;包括对MSVC运行时的扩展,以支持C99功能。MinGW的所有软件都可以在64位Windows平台上运行。