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常用小的特效(确认删除弹窗、返回顶部)

1、确认操作(如删除)弹窗。

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 <script language="javascript">    function delcfm() {        if (!confirm("确认要删除?")) {            window.event.returnValue = false;        }    }</script><input name="" type="submit" value="删除" onClick="delcfm()" /></form>
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2、返回顶部

JS部分<script type="text/javascript" src="/javascript/jquery.js"></script>    <script type="text/javascript">    var scrolltotop={    setting:{        startline:100, //起始行        scrollto:0, //滚动到指定位置        scrollduration:400, //滚动过渡时间        fadeduration:[500,100] //淡出淡现消失    },    controlHTML:<div class="up"></div>, //返回顶部按钮    controlattrs:{offsetx:30,offsety:80},//返回按钮固定位置    anchorkeyword:"#top",    state:{        isvisible:false,        shouldvisible:false    },scrollup:function(){        if(!this.cssfixedsupport){            this.$control.css({opacity:0});        }        var dest=isNaN(this.setting.scrollto)?this.setting.scrollto:parseInt(this.setting.scrollto);        if(typeof dest=="string"&&jQuery("#"+dest).length==1){            dest=jQuery("#"+dest).offset().top;        }else{            dest=0;        }        this.$body.animate({scrollTop:dest},this.setting.scrollduration);    },keepfixed:function(){        var $window=jQuery(window);        var controlx=$window.scrollLeft()+$window.width()-this.$control.width()-this.controlattrs.offsetx;        var controly=$window.scrollTop()+$window.height()-this.$control.height()-this.controlattrs.offsety;        this.$control.css({left:controlx+"px",top:controly+"px"});    },togglecontrol:function(){        var scrolltop=jQuery(window).scrollTop();        if(!this.cssfixedsupport){            this.keepfixed();        }        this.state.shouldvisible=(scrolltop>=this.setting.startline)?true:false;        if(this.state.shouldvisible&&!this.state.isvisible){            this.$control.stop().animate({opacity:1},this.setting.fadeduration[0]);            this.state.isvisible=true;        }else{            if(this.state.shouldvisible==false&&this.state.isvisible){                this.$control.stop().animate({opacity:0},this.setting.fadeduration[1]);                this.state.isvisible=false;            }        }    },init:function(){        jQuery(document).ready(function($){            var mainobj=scrolltotop;            var iebrws=document.all;            mainobj.cssfixedsupport=!iebrws||iebrws&&document.compatMode=="CSS1Compat"&&window.XMLHttpRequest;            mainobj.$body=(window.opera)?(document.compatMode=="CSS1Compat"?$("html"):$("body")):$("html,body");            mainobj.$control=$(<div id="topcontrol">+mainobj.controlHTML+"</div>").css({position:mainobj.cssfixedsupport?"fixed":"absolute",bottom:mainobj.controlattrs.offsety,right:mainobj.controlattrs.offsetx,opacity:0,cursor:"pointer"}).attr({title:"返回顶部"}).click(function(){mainobj.scrollup();return false;}).appendTo("body");if(document.all&&!window.XMLHttpRequest&&mainobj.$control.text()!=""){mainobj.$control.css({width:mainobj.$control.width()});}mainobj.togglecontrol();            $(a[href="http://www.mamicode.com/+mainobj.anchorkeyword+"]).click(function(){mainobj.scrollup();return false;});            $(window).bind("scroll resize",function(e){mainobj.togglecontrol();});        });    }};scrolltotop.init();    </script>CSS部分:<style>.up{width:54px;height:54px;background:url(/images/topback.gif) no-repeat 0 0;filter:alpha(Opacity=60);-moz-opacity:0.6;opacity: 0.6;}.up:hover{filter:alpha(Opacity=100);-moz-opacity:1;opacity:1;}</style>

 需要使用到的图片   技术分享

 

3、文本输入框有默认字体,输入后消失

html+css<!DOCTYPE html><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>输入框文字颜色变化 在线演示 DIVCSS5</title><!--  DIVCSS5 www.divcss5.com 请保留以便售后维护与服务  --><style>.input{ border:1px solid #333; background:#FFF; line-height:20px}#n{margin:10px auto; width:920px; border:1px solid #CCC;font-size:12px; line-height:30px;}#n a{ padding:0 4px; color:#333}.form-box{ margin:0 auto; width:230px}</style><script src="js/jquery-1.3.2.min.js" type="text/javascript"></script></head><body><p align="center">在线演示特效效果如下:</p>    <div class="form-box">        <form action="" method="post">            <input id="oncity" class="input" name="" value="请选择/输入发货城市" type="text" />            <!-- divcss5提示: 修改默认显示文字"请选择/输入发货城市"需要与input.js代码内默认文字对应 -->            <input name="" type="submit" value="查询" />        </form>        <!-- 提示以下JS需要放 表单输入框后 不能放前 -->        <script type="text/javascript" src="js/input.js"></script>    </div></body></html>input.js(function(doc){var $ = function(id) { return doc.getElementById(id); };var placeholder = ‘请选择/输入发货城市‘;//divcss5提示: 修改默认显示文字需要与Html表单默认文字对应var inputname = $(‘oncity‘);    inputname.onfocus = function(){      if ( this.value =http://www.mamicode.com/= placeholder ) {>

 

常用小的特效(确认删除弹窗、返回顶部)