{"id":2354,"date":"2017-05-21T10:29:53","date_gmt":"2017-05-21T02:29:53","guid":{"rendered":"http:\/\/www.qdabc.cn\/?p=2354"},"modified":"2017-05-21T10:29:53","modified_gmt":"2017-05-21T02:29:53","slug":"%e8%87%aa%e7%94%b1%e8%90%bd%e4%bd%93%e8%bf%90%e5%8a%a8-%e5%bc%b9%e8%b7%b3%e7%9a%84%e5%b0%8f%e7%90%83","status":"publish","type":"post","link":"http:\/\/www.qdabc.cn\/?p=2354","title":{"rendered":"\u81ea\u7531\u843d\u4f53\u8fd0\u52a8 \u5f39\u8df3\u7684\u5c0f\u7403"},"content":{"rendered":"
<!DOCTYPE html>\r\n<html lang=\"en\">\r\n<head>\r\n    <meta charset=\"UTF-8\">\r\n    <title>\u81ea\u7531\u843d\u4f532<\/title>\r\n    <style>\r\n        body{\r\n            position: relative;\r\n        }\r\n        .ball{\r\n            position: absolute;\r\n            top:0;\r\n            width:50px;\r\n            height:50px;\r\n            background-color: #00b3ee;\r\n            border-radius:50px;\r\n        }\r\n    <\/style>\r\n<\/head>\r\n<body>\r\n<div class=\"ball\"><\/div>\r\n<script>var freeDrop=function(obj){\r\n        var init_pos=obj.direction=='Y'?obj.ele.offsetTop:obj.ele.offseetLeft;\r\n        var initTar=init_pos+obj.target; \/\/\u5177\u4f53\u8bbe\u5b9a\u4f4d\u79fb\r\n        var init_speed=obj.init_speed;\r\n        var ele=obj.ele;\r\n        var acc=obj.acceleration; \/\/\u52a0\u901f\u5ea6\r\n        var time=0;  \/\/\u521d\u8bd5\u65f6\u95f4\r\n        var distance; \/\/\u4f4d\u79fb\r\n        var cur_speed=init_speed; \/\/\u5f53\u524d\u901f\u5ea6\r\n        var rebound_speed; \/\/\u53cd\u5f39\u901f\u5ea6\r\n        var rebound_pos=ele.offsetTop; \/\/\u6bcf\u6b21\u53cd\u5f39\u6700\u9ad8\u5904\u7684\u4f4d\u7f6e\r\n        var isclear=false;\r\n        var is_first=true;\r\n        var time_add=0.5; \/\/\u81ea\u589e\u503c\u8fc7\u5927\u4f1a\u6709\u6b8b\u5f71\r\n        function setPos(pos){\r\n            if(obj.direction=='Y'){\r\n                ele.style.top=pos+\"px\";\r\n            }else{\r\n                ele.style.left=pos+'px';\r\n            }\r\n        };\r\n        var timer=setInterval(function () {\r\n            if(cur_speed>=0){\r\n                \/\/\u5143\u7d20\u7684\u521d\u59cb\u4f4d\u7f6e\u52a0\u4e0a\u8fd0\u52a8\u4f4d\u79fb\r\n                distance=rebound_pos+cur_speed*time+0.5*acc*Math.pow(time,2);\r\n                setPos(distance);\r\n                time+=time_add;\r\n                if(distance>=initTar) {\r\n                    setPos(initTar);\r\n                    \/\/\u662f\u5426\u7b2c\u4e00\u6b21\u4e0b\u843d\r\n                    init_speed=is_first?init_speed:0;\r\n                    cur_speed=-(acc*time+init_speed);\r\n                    is_first=false;\r\n                    console.log(\"\u78b0\u58c1\u524d\u7684\u901f\u5ea6\"+cur_speed);\r\n                    time=0;\r\n                };\r\n            }else{\r\n                \/\/\u78b0\u58c1\u65f6\u7684\u52a8\u80fd\u635f\u5931\r\n                if(time==0){\r\n\/\/                    cur_speed*=obj.reduction;\r\n\/\/                    cur_speed=-Math.floor(-cur_speed);\r\n                    cur_speed+=obj.reduction; \/\/\u8fd9\u65f6\u5019\u7684\u901f\u5ea6\u662f\u8d1f\u503c\r\n                    console.log(\"\u78b0\u58c1\u540e\u7684\u901f\u5ea6\"+cur_speed);\r\n                };\r\n                \/\/\u53cd\u5f39\u7684\u6700\u9ad8\u70b9\u4f4d\u7f6e\u662f\u4e34\u754c\u4f4d\u7f6e\u51cf\u53bb\u53cd\u5f39\u6700\u5927\u4f4d\u79fb\r\n                distance=initTar-(-cur_speed*time-0.5*acc*Math.pow(time,2));\r\n                \/\/\u5230\u8fbe\u6700\u5927\u4f4d\u7f6e\u65f6\u53d6\u6d88\u5b9a\u65f6\u5668\r\n                setPos(distance);\r\n                time+=time_add;\r\n\r\n                \/\/\u5982\u679c\u8bbe\u7f6e\u52a0\u901f\u5ea6\u8fc7\u5927\uff0c\u90a3\u4e48\u7531\u4e8etime\u6bcf\u6b21\u52a01 \u5c31\u4f1a\u9020\u6210\u53cd\u5f39\u901f\u5ea6\u4f1a\u5927\u4e8e\u6216\u8005\u7b49\u4e8e\r\n                \/\/\u4e0b\u964d\u65f6\u7684\u6700\u5927\u901f\u5ea6\uff0c\u4e0e\u9700\u6c42\u6548\u679c\u76f8\u53cd\uff0c\u8fd9\u65f6\u5019\u7684\u5904\u7406\u662f\r\n                \/\/ 1\u3002if(acc*(time+acc)>=Math.floor(-cur_speed)){\r\n                \/\/2.\u51cf\u5c0ftime\u81ea\u589e\u503c\r\n                if(acc*time>=Math.floor(-cur_speed)){\r\n                    if(Math.abs(distance-initTar)<=1){\r\n                        clearInterval(timer);\r\n                    }\r\n                    time=0;\r\n                    cur_speed=0;\r\n                    rebound_pos=ele.offsetTop;\r\n                }\r\n            }\r\n        },obj.quality_effect);\r\n    };\r\n    freeDrop({\r\n        ele:document.getElementsByClassName(\"ball\")[0],\/\/\u8bbe\u7f6e\u78b0\u649e\u7269\u4f53\r\n        target:300,\/\/\u4ece\u5f00\u59cb\u4f4d\u7f6e\u5230\u7ed3\u675f\u4f4d\u7f6e\u7684\u8ddd\u79bb\r\n        init_speed:10,\r\n        direction:\"Y\",\r\n        quality_effect:10,\/\/\u901a\u8fc7\u8fd9\u4e2a\u53c2\u6570\u8bbe\u7f6e\u4f53\u9a8c\u8d28\u91cf\u53d8\u5316\u6548\u679c\r\n        acceleration:2,\/\/\u52a0\u901f\u5ea6\r\n        reduction:2, \/\/\u78b0\u649e\u635f\u5931\r\n    });\r\n\r\n<\/script>\r\n<\/body>\r\n<\/html><\/pre>\n
\u6b22\u8fce\u5206\u4eab\u672c\u6587\uff0c\u8f6c\u8f7d\u8bf7\u4fdd\u7559\u51fa\u5904\uff1a\u524d\u7aefABC<\/a> » \u81ea\u7531\u843d\u4f53\u8fd0\u52a8 \u5f39\u8df3\u7684\u5c0f\u7403<\/a><\/p>","protected":false},"excerpt":{"rendered":"
<!DOCTYPE html> <html lang=”en”> <head> <meta charset=”UTF-8″> <title> […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[9,177],"_links":{"self":[{"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/posts\/2354"}],"collection":[{"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2354"}],"version-history":[{"count":1,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/posts\/2354\/revisions"}],"predecessor-version":[{"id":2355,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/posts\/2354\/revisions\/2355"}],"wp:attachment":[{"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2354"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2354"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}