}
因此,結合上述兩個代碼片段,我們得到了以下適合所有主流瀏覽器創建XMLHttpRequest對象的代碼:
var xmlhttp = false;
try {
xmlhttp = new XMLHttpRequest();
} catch (trymicrosoft) {
try {
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
} catch (othermicrosoft) {
try {
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
} catch (failed) {
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