晋太元中,武陵人捕鱼为业。缘溪行,忘路之远近。忽逢桃花林,夹岸数百步,中无杂树,芳草鲜美,落英缤纷。渔人甚异之,复前行,欲穷其林。 林尽水源,便得一山,山有小口,仿佛若有光。便舍船,从口入。初极狭,才通人。复行数十步,豁然开朗。土地平旷,屋舍俨然,有良田、美池、桑竹之属。阡陌交通,鸡犬相闻。其中往来种作,男女衣着,悉如外人。黄发垂髫,并怡然自乐。 见渔人,乃大惊,问所从来。具答之。便要还家,设酒杀鸡作食。村中闻有此人,咸来问讯。自云先世避秦时乱,率妻子邑人来此绝境,不复出焉,遂与外人间隔。问今是何世,乃不知有汉,无论魏晋。此人一一为具言所闻,皆叹惋。余人各复延至其家,皆出酒食。停数日,辞去。此中人语云:“不足为外人道也。”(间隔 一作:隔绝) 既出,得其船,便扶向路,处处志之。及郡下,诣太守,说如此。太守即遣人随其往,寻向所志,遂迷,不复得路。 南阳刘子骥,高尚士也,闻之,欣然规往。未果,寻病终。后遂无问津者。
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/*!
* jquery.tagcloud.js
* A Simple Tag Cloud Plugin for JQuery
*
* https://github.com/addywaddy/jquery.tagcloud.js
* created by Adam Groves
*/
(function($) {
/*global jQuery*/
"use strict";
var compareWeights = function(a, b)
{
return a - b;
};
// Converts hex to an RGB array
var toRGB = function(code) {
if (code.length === 4) {
code = jQuery.map(/\w+/.exec(code), function(el) {return el + el; }).join("");
}
var hex = /(\w{2})(\w{2})(\w{2})/.exec(code);
return [parseInt(hex[1], 16), parseInt(hex[2], 16), parseInt(hex[3], 16)];
};
// Converts an RGB array to hex
var toHex = function(ary) {
return "#" + jQuery.map(ary, function(i) {
var hex = i.toString(16);
hex = (hex.length === 1) ? "0" + hex : hex;
return hex;
}).join("");
};
var colorIncrement = function(color, range) {
return jQuery.map(toRGB(color.end), function(n, i) {
return (n - toRGB(color.start)[i])/range;
});
};
var tagColor = function(color, increment, weighting) {
var rgb = jQuery.map(toRGB(color.start), function(n, i) {
var ref = Math.round(n + (increment[i] * weighting));
if (ref > 255) {
ref = 255;
} else {
if (ref < 0) {
ref = 0;
}
}
return ref;
});
return toHex(rgb);
};
$.fn.tagcloud = function(options) {
var opts = $.extend({}, $.fn.tagcloud.defaults, options);
var tagWeights = this.map(function(){
return $(this).attr("rel");
});
tagWeights = jQuery.makeArray(tagWeights).sort(compareWeights);
var lowest = tagWeights[0];
var highest = tagWeights.pop();
var range = highest - lowest;
if(range === 0) {range = 1;}
// Sizes
var fontIncr, colorIncr;
if (opts.size) {
fontIncr = (opts.size.end - opts.size.start)/range;
}
// Colors
if (opts.color) {
colorIncr = colorIncrement (opts.color, range);
}
return this.each(function() {
var weighting = $(this).attr("rel") - lowest;
if (opts.size) {
$(this).css({"font-size": opts.size.start + (weighting * fontIncr) + opts.size.unit});
}
if (opts.color) {
$(this).css({"color": tagColor(opts.color, colorIncr, weighting)});
}
});
};
$.fn.tagcloud.defaults = {
size: {start: 14, end: 18, unit: "pt"}
};
})(jQuery);