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jquery插件--实现滑块控制颜色的效果

2012-03-29 21:54 513 查看

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>jquery插件--实现滑块控制颜色的效果</title>

</head>

<style>

#red,#green,#blue{

float:left;

clear:left;

width:300px;

margin:15px;}

#swatch {

width: 120px;

height: 100px;

margin-top: 18px;

margin-left: 350px;

background-image: none;

}

#red .ui-slider-range { background: #ef2929; }

#red .ui-slider-handle { border-color: #ef2929; }

#green .ui-slider-range { background: #8ae234; }

#green .ui-slider-handle { border-color: #8ae234; }

#blue .ui-slider-range { background: #729fcf; }

#blue .ui-slider-handle { border-color: #729fcf; }

#demo-frame > div.demo { padding: 10px !important; };

</style>

<script language="javascript" type="text/javascript" src="./js/jquery-1.7.1.min.js"></script>

<script language="javascript" type="text/javascript" src="./js/jquery-ui-1.8.18.custom.min.js"></script>

<link type="text/css" href="./css/jquery-ui-1.8.18.custom.css" rel="stylesheet">

<script language="javascript" type="text/javascript">

function hexFromRGB(r,g,b){

var hex=[

r.toString(16),

g.toString(16),

b.toString(16)

];

$.each(hex,function (nr,val){

if ( val.length === 1 ) {

hex[ nr ] = "0" + val;

}

});

return hex.join( "" ).toUpperCase();

};

function refreshSwatch(){

var red=$("#red").slider("value");

var green=$("#green").slider("value");

var blue=$("#blue").slider("value");

hex = hexFromRGB( red, green, blue );

$( "#swatch" ).css( "background-color", "#" + hex );

};

$(document).ready(function(){

$("#red,#green,#blue").slider({

orientation:"horizontal",//滑块的方向水平

range:"min",

max:255,//滑块的最大值

value:127,//最大值-最小值

slide:refreshSwatch,

change:refreshSwatch,

});

$( "#red" ).slider( "value", 255 );

$( "#green" ).slider( "value", 140 );

$( "#blue" ).slider( "value", 60 );

});

</script>

<body class="ui-widget-content" style="border:0;">

<div id="demo">

<p class="ui-state-default ui-corner-all ui-helper-clearfix" style="padding:4px;">

<span class="ui-icon ui-icon-pencil" style="float:left; margin:-2px 5px 0 0;"></span>

Simple Colorpicker

</p>

<div id="red"></div>

<div id="green"></div>

<div id="blue"></div>

<div id="swatch" class="ui-widget-content ui-corner-all"></div>

</div>

<div class="demo-description" style="clear:left;">

<p>Combine three sliders to create a simple RGB colorpicker.</p>

</div>

</body>

</html>

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