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一般来说,大家必须在应用他们以前封裝他们,就以jQuery的ajax为例子。封装ajax如下所示:const $ = {};$.ajax = (obj)=>{ var xhr; if (window.XMLHttpRequest) { xhr = new XMLHttpRequest(); } else if (window.ActiveXObject) { // IE try { xhr = new ActiveXObject('MSXml2.XMLHTTP'); } catch (e) { try { xhr = new ActiveXObject('Microsoft.XMLHTTP'); } catch (e)
还记得那个玩游戏废寝忘食的自己么?如今