1. 在线图片: http://image.zhangxinxu.com/image/study/s/s256/mm3.jpg // mmX.jpg: X可为任意的数字
2. 在线json: 雅虎天气api: https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20weather.forecast%20where%20woeid%20%3D%202151330&format=json
// 使用jquery获取雅虎天气
$.getJSON('https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20weather.forecast%20where%20woeid%20%3D%202151330&format=json', function(data) {console.log(data)});