今天上课学到了jsonp，看了理解，还需要多敲，代码贴出来看看
<!doctype html> <html> <head> <meta charset="utf-8"> <meta name="author" content="智能社 - zhinengshe.com" /> <meta name="copyright" content="智能社 - zhinengshe.com" /> <title>智能社 - www.zhinengshe.com</title> <script> function jsonp(url,data,cbName,fn,timeout,fnFaild){ var fnName = "jsonp_" + Math.random(); fnName = fnName.replace(".",""); //data.callback = fnName; //callback cb xx bbb data[cbName] = fnName; var arr = []; for(var name in data){ arr.push(name + "="+ data[name]); } var str = arr.join("&"); window[fnName] = function (json){ fn && fn(json); oHead.removeChild(oS); clearTimeout(timer); } var oS = document.createElement("script"); oS.src = url + "?" + str; var oHead = document.getElementsByTagName("head")[0]; oHead.appendChild(oS); if(timeout){ var timer = setTimeout(function(){ fnFaild(); window[fnName] = function(){}; oHead.removeChild(oS); },timeout); } } window.onload = function(){ var oText = document.getElementById("txt1"); //http://sug.so.360.cn/suggest?callback=xxx&word=aa var url = "http://sug.so.360.cn/suggest"; //var url = "https://sp0.baidu.com/5a1Fazu8AA54nxGko9WTAnF6hhy/su"; oText.onkeyup = function(){ jsonp( url, {word:this.value,wd:this.value}, "callback", //"cb", function (json){ var oUl = document.getElementById("ul1"); oUl.innerHTML = ""; for(var i = 0; i < json.s.length; i++){ var oLi = document.createElement("li"); oLi.innerHTML = json.s[i]; oUl.appendChild(oLi); } }, 1000, function(){ alert("超时失败"); } ); }; }; </script> </head> <body> <input id="txt1" type="text" value=""/> <ul id="ul1"> </ul> </body> </html>