zoukankan      html  css  js  c++  java
  • 【javascript】js 美化单选,多选和下拉框

    这是以前收藏的用 js 实现美化单选,多选和下拉框的效果。

    先上效果图:

    Html代码:

    <!DOCTYPE HTML>
    <html lang="en-US">
    <head>
        <meta charset="UTF-8">
        <title>checkbox and radio and select</title>
        <style type="text/css">
        body{font:0.8em arial,sans-serif;}
        .checkbox,.radio{width:19px;height:25px;padding-right:5px;background:url(checkbox.gif) no-repeat;float:left;}
        .radio{background:url(radio.gif) no-repeat;}
        .select{position:absolute;width:158px;height:21px;padding:0 24px 0 8px;color:white;font:12px/21px arial,sans-serif;background:url(select.gif) no-repeat;overflow:hidden;}
        </style>
    </head>
    <body>
        <h1>Checkbox</h1>
        <p><input type="checkbox" name="checked" id="checked" class="styled"/><label for="checked">Checked</label></p>
        <h1>Radio</h1>
        <p><input type="radio" name="radio" id="yes" class="styled"/><label for="yes">Yes</label></p>
        <p><input type="radio" name="radio" id="no" class="styled"/><label for="no">No</label></p>
        <h1>Select</h1>
        <select class="styled" name="who">
            <option selected="selected">Who</option>
            <option>What</option>
            <option>When</option>
            <option>Where</option>
            <option>How</option>
        </select>
    </body>
    </html>
    <script type="text/javascript" src="custom-form-elements.js"></script>

    custom-form-elements.js代码:

    View Code
    /*
    CUSTOM FORM ELEMENTS
    
    Created by Ryan Fait
    www.ryanfait.com
    
    The only things you may need to change in this file are the following
    variables: checkboxHeight, radioHeight and selectWidth (lines 24, 25, 26)
    
    The numbers you set for checkboxHeight and radioHeight should be one quarter
    of the total height of the image want to use for checkboxes and radio
    buttons. Both images should contain the four stages of both inputs stacked
    on top of each other in this order: unchecked, unchecked-clicked, checked,
    checked-clicked.
    
    You may need to adjust your images a bit if there is a slight vertical
    movement during the different stages of the button activation.
    
    The value of selectWidth should be the width of your select list image.
    
    Visit http://ryanfait.com/ for more information.
    */
    
    var checkboxHeight = "25";
    var radioHeight = "25";
    var selectWidth = "190";
    
    /* No need to change anything after this */
    
    document.write('<style type="text/css">input.styled { display: none; } select.styled { position: relative;  ' + selectWidth + 'px; opacity: 0; filter: alpha(opacity=0); z-index: 5; } .disabled { opacity: 0.5; filter: alpha(opacity=50); }</style>');
    
    var Custom = {
        init: function() {
            var inputs = document.getElementsByTagName("input"), span = Array(), textnode, option, active;
            for(a = 0; a < inputs.length; a++) {
                if((inputs[a].type == "checkbox" || inputs[a].type == "radio") && inputs[a].className == "styled") {
                    span[a] = document.createElement("span");
                    span[a].className = inputs[a].type;
    
                    if(inputs[a].checked == true) {
                        if(inputs[a].type == "checkbox") {
                            position = "0 -" + (checkboxHeight*2) + "px";
                            span[a].style.backgroundPosition = position;
                        } else {
                            position = "0 -" + (radioHeight*2) + "px";
                            span[a].style.backgroundPosition = position;
                        }
                    }
                    inputs[a].parentNode.insertBefore(span[a], inputs[a]);
                    inputs[a].onchange = Custom.clear;
                    if(!inputs[a].getAttribute("disabled")) {
                        span[a].onmousedown = Custom.pushed;
                        span[a].onmouseup = Custom.check;
                    } else {
                        span[a].className = span[a].className += " disabled";
                    }
                }
            }
            inputs = document.getElementsByTagName("select");
            for(a = 0; a < inputs.length; a++) {
                if(inputs[a].className == "styled") {
                    option = inputs[a].getElementsByTagName("option");
                    active = option[0].childNodes[0].nodeValue;
                    textnode = document.createTextNode(active);
                    for(b = 0; b < option.length; b++) {
                        if(option[b].selected == true) {
                            textnode = document.createTextNode(option[b].childNodes[0].nodeValue);
                        }
                    }
                    span[a] = document.createElement("span");
                    span[a].className = "select";
                    span[a].id = "select" + inputs[a].name;
                    span[a].appendChild(textnode);
                    inputs[a].parentNode.insertBefore(span[a], inputs[a]);
                    if(!inputs[a].getAttribute("disabled")) {
                        inputs[a].onchange = Custom.choose;
                    } else {
                        inputs[a].previousSibling.className = inputs[a].previousSibling.className += " disabled";
                    }
                }
            }
            document.onmouseup = Custom.clear;
        },
        pushed: function() {
            element = this.nextSibling;
            if(element.checked == true && element.type == "checkbox") {
                this.style.backgroundPosition = "0 -" + checkboxHeight*3 + "px";
            } else if(element.checked == true && element.type == "radio") {
                this.style.backgroundPosition = "0 -" + radioHeight*3 + "px";
            } else if(element.checked != true && element.type == "checkbox") {
                this.style.backgroundPosition = "0 -" + checkboxHeight + "px";
            } else {
                this.style.backgroundPosition = "0 -" + radioHeight + "px";
            }
        },
        check: function() {
            element = this.nextSibling;
            if(element.checked == true && element.type == "checkbox") {
                this.style.backgroundPosition = "0 0";
                element.checked = false;
            } else {
                if(element.type == "checkbox") {
                    this.style.backgroundPosition = "0 -" + checkboxHeight*2 + "px";
                } else {
                    this.style.backgroundPosition = "0 -" + radioHeight*2 + "px";
                    group = this.nextSibling.name;
                    inputs = document.getElementsByTagName("input");
                    for(a = 0; a < inputs.length; a++) {
                        if(inputs[a].name == group && inputs[a] != this.nextSibling) {
                            inputs[a].previousSibling.style.backgroundPosition = "0 0";
                        }
                    }
                }
                element.checked = true;
            }
        },
        clear: function() {
            inputs = document.getElementsByTagName("input");
            for(var b = 0; b < inputs.length; b++) {
                if(inputs[b].type == "checkbox" && inputs[b].checked == true && inputs[b].className == "styled") {
                    inputs[b].previousSibling.style.backgroundPosition = "0 -" + checkboxHeight*2 + "px";
                } else if(inputs[b].type == "checkbox" && inputs[b].className == "styled") {
                    inputs[b].previousSibling.style.backgroundPosition = "0 0";
                } else if(inputs[b].type == "radio" && inputs[b].checked == true && inputs[b].className == "styled") {
                    inputs[b].previousSibling.style.backgroundPosition = "0 -" + radioHeight*2 + "px";
                } else if(inputs[b].type == "radio" && inputs[b].className == "styled") {
                    inputs[b].previousSibling.style.backgroundPosition = "0 0";
                }
            }
        },
        choose: function() {
            option = this.getElementsByTagName("option");
            for(d = 0; d < option.length; d++) {
                if(option[d].selected == true) {
                    document.getElementById("select" + this.name).childNodes[0].nodeValue = option[d].childNodes[0].nodeValue;
                }
            }
        }
    }
    window.onload = Custom.init;

    PS:下拉框的效果在 ie6 下不兼容。附上下载地址。

  • 相关阅读:
    PHP中常用的字符串格式化函数总结
    php格式化金额函数分享
    PHP获取当前日期和时间及格式化方法参数
    CSS 中如何把 Span 标签设置为固定宽度
    css中 Span 元素的 width 属性无效果原因及多种解决方案
    js网页如何获取手机屏幕宽度
    HTML meta viewport属性详细说明
    Android onLowMemory()和onTrimMemory()
    Qt 拷贝文件目录
    QT5.1 调用https
  • 原文地址:https://www.cnblogs.com/yjzhu/p/2805441.html
Copyright © 2011-2022 走看看