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1.一个封装的例子 $$ = function(win){ var isIE = !-[1,]; doc = win.document; head = doc.getElementsByTagName('head')[0]; function request(url, success, timestamp){ var script = doc.createElement('script'); function callback(){ if(typeof jsonp != 'undefined'){ success(jsonp); }else{ //success(""); //alert('warning: jsonp did not return.'); alert("Shopalと通信ができません"); } // Handle memory leak in IE script.onload = script.onreadystatechange = null; if( head && script.parentNode ){ head.removeChild(script); } } if(isIE){ script.onreadystatechange = function(){ var readyState = this.readyState; if(readyState == 'loaded' || readyState == 'complete'){ callback(); } }; }else{ script.onload = function(){ callback(); }; } if(timestamp){ url += '?ts=' + (new Date).getTime(); } script.src = url; head.insertBefore(script, head.firstChild); } return {load:request}; }(this); ---------------------------- 原理： <script type="text/javascript"> // This is our function to be called with JSON data function showPrice(data) { alert("Symbol: " + data.symbol + ", Price: " + data.price); } var url = “ticker.js”; // URL of the external script // this shows dynamic script insertion var script = document.createElement('script'); script.setAttribute('src', url); // load the script document.getElementsByTagName('head')[0].appendChild(script); </script> http://club.topsage.com/thread-327033-1-1.html

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