http://wthrcdn.etouch.cn/weather_mini?city=（输入需要查询的地区名称）例如；http://wthrcdn.etouch.cn/weather_mini?city=广州输入查询后将返回josn数据结果{ "data": { "yesterday": { "date": "19日星期一", "high": "高温 36℃", "fx": "西北风", "low": "低温 26℃", "fl": "<![CDATA[2级]]>", "type": "小雨" }, "city": "广州", "forecast": [{ "date": "20日星期二", "high": "高温 34℃", "fengli": "<![CDATA[2级]]>", "low": "低温 24℃", "fengxiang": "东风", "type": "小雨" }, { "date": "21日星期三", "high": "高温 32℃", "fengli": "<![CDATA[2级]]>", "low": "低温 24℃", "fengxiang": "东南风", "type": "小雨" }, { "date": "22日星期四", "high": "高温 33℃", "fengli": "<![CDATA[2级]]>", "low": "低温 24℃", "fengxiang": "东南风", "type": "多云" }, { "date": "23日星期五", "high": "高温 35℃", "fengli": "<![CDATA[2级]]>", "low": "低温 25℃", "fengxiang": "东南风", "type": "中雨" }, { "date": "24日星期六", "high": "高温 35℃", "fengli": "<![CDATA[2级]]>", "low": "低温 25℃", "fengxiang": "东南风", "type": "小雨" }], "ganmao": "感冒易发期，外出请适当调整衣物，注意补充水分。", "wendu": "33" }, "status": 1000, "desc": "OK" }

效果显示：变色文字效果 function changeColor(){ var color="#f00|#0f0|#00f|#880|#808|#088|yellow|green|blue|gray"; color=color.split("|"); document.getElementById("blink").style.color=color[parseInt(Math.random() * color.length)]; } setInterval("changeColor()",200); 代码：<!-- js实现变色文字 --> <div id="blink"> <strong> <div align="left" style="text-align:center;"> 变色文字效果 </div> </strong><strong> <script language="javascript"> function changeColor(){ var color="#f00|#0f0|#00f|#880|#808|#088|yellow|green|blue|gray"; color=color.split("|"); document.getElementById("blink").style.color=color[parseInt(Math.random() * color.length)]; } setInterval("changeColor()",200); </script> </strong> </div>

用过ajax的童鞋就知道ajax可以跨域触发某个接口，但是由此引起一个任何域都可以调用的问题，这时候就要考虑用到防盗链技术了，在PHP中$_SERVER["HTTP_REFERER"]，$_SERVER["HTTP_REFERER"]里放置的是链接到本页面的上一个页面的URL，假如你是直接进来的话，$_SERVER["HTTP_REFERER"]是没有值的。下面以一个简单的实例介绍一下，PHP如何防伪造提交数据：1、非4dn.net调用的接口全部拒绝访问<?php $sheli = $_SERVER['HTTP_HOST'];if($sheli){$url = parse_url($sheli);if($url['path'] != '4dn.net'){exit('拒绝访问！');}} ?>2、允许在4dn.net子域名间调用的方法<?php $sheli = $_SERVER['HTTP_HOST']; if($sheli){$url = parse_url($sheli);$t=explode('.',$url['path']);$l=count($t);$domainStr=$t[$l-2].'.'.$t[$l-1];if($domainStr != '4dn.net') {echo('拒绝访问！');}} ?>