小编Pro*_*loy的帖子

使用html5画布创建形状后使用鼠标拖动形状

我在html画布上绘制了一些圆圈,我的代码如下所示:

HTML:

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>WebTunings</title>
    <link href="index.css" rel="stylesheet">
    <script src="index.js"></script>
</head>

<body>
<canvas id="canvas" width="600" height="600"></canvas>

<div id="controls">
    <p><label>Fill: <input id="fillBox" type="checkbox" checked="checked"></label></p>

    <div class="lightBorder">
        <p><input type="radio" name="shape" value="circle" checked="checked">Circle</p>
    </div>

    <p><input id="clearCanvas" type="button" value="reset"></p>
</div>

</body>
</html>

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使用Javascript:

var canvas,
    context,
    dragging = false,
    dragStartLocation,
    snapshot;


function getCanvasCoordinates(event) {
    var x = event.clientX - canvas.getBoundingClientRect().left,
        y = event.clientY - canvas.getBoundingClientRect().top;

    return {x: x, y: y};
}

function takeSnapshot() {
    snapshot = context.getImageData(0, 0, canvas.width, …

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javascript html5 canvas

Pro*_*loy

lucky-day

2
推荐指数

1
解决办法

6029
查看次数

Web Scraper使用Scrapy

我只需解析此链接中的位置和点数.该链接有21个列表(我实际上不知道该怎么称呼它们) 在此输入图像描述每个上市都有40名玩家期待最后一个.现在我写了一个像这样的代码,

from bs4 import BeautifulSoup
import urllib2

def overall_standing():
    url_list = ["http://www.afl.com.au/afl/stats/player-ratings/overall-standings#", 
                "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/2",
#                 "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/3",
#                 "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/4",
#                 "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/5",
#                 "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/6",
#                 "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/7",
#                 "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/8",
#                 "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/9",
#                 "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/10",
#                 "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/11",
#                 "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/12",
#                 "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/13",
#                 "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/14",
#                 "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/15",
#                 "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/16",
#                 "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/17",
#                 "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/18",
#                 "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/19",
#                 "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/20",
                "http://www.afl.com.au/afl/stats/player-ratings/overall-standings#page/21"]

    gDictPlayerPointsInfo = {}
    for url in url_list:
        print url
        header = {'User-Agent': 'Mozilla/5.0'}
        header = {'User-Agent': 'Mozilla/5.0'}
        req = urllib2.Request(url,headers=header)
        page = urllib2.urlopen(req)
        soup = BeautifulSoup(page) …

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python scrapy

Pro*_*loy

2019 01-14

1
推荐指数

1
解决办法

466
查看次数