JS：AJAX的實現
阿新 • • 發佈：2019-01-01
1. 複習一下AJAX的實現。
2. 程式碼如下
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> </head> <body> <script type="text/javascript"> var $x = (function() { return { ajax: function(obj) { if(window.XMLHttpRequest) { var req = new window.XMLHttpRequest() if(!obj.type) obj.type = 'GET' try { req.open(obj.type, obj.url, obj.async) req.onreadystatechange = function() { if(req.readyState == 4 && req.status == 200 || req.status == 304) obj.success(req.responseText, req.status, req.readyState) else obj.error(req.responseText, req.status, req.readyState) } req.setRequestHeader('Content-type', 'application/x-www-form-urlencoded') req.send(getQueryStr(obj.data)) } catch(e) { obj.error(e.message) } } else { console.log('你的瀏覽器不支援.') } function getQueryStr(obj) { var result = '' if(typeof obj !== 'object') return result for(var tmp in obj) { if(typeof obj[tmp] !== 'object') result += tmp + '=' + obj[tmp] + '&' else result += getQueryStr(obj[tmp]) } return result } } } })() </script> </body> </html>
至此。