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window.onLoad = function(){alert('hi loaded');var clickButton = document.getElementById("checkusername"); /* check username button */clickButton.onClick = function(){ alert('Hi!'); var spanTag = document.getElementById("checkoutput"); var usernameText = document.getElementById("username"); if (usernameText !== usernameText) { var reqUrl = "/register/" + usernameText.value + "/"; var handleSuccess = function(o){ if(o.responseText !== undefined) { spanTag.innerHTML = "<li>Transaction id: " + o.tId + "</li>"; spanTag.innerHTML += "<li>HTTP status: " + o.status + "</li>"; spanTag.innerHTML += "<li>Status code message: " + o.statusText + "</li>"; spanTag.innerHTML += "<li>HTTP headers: <ul>" + o.getAllResponseHeaders + "</ul></li>"; spanTag.innerHTML += "<li>Server response: " + o.responseText + "</li>"; spanTag.innerHTML += "<li>Argument object: Object ( [foo] => " + o.argument.foo + " [bar] => " + o.argument.bar +" )</li>"; } } var handleFailure = function(o) { if(o.responseText !== undefined){ spanTag.innerHTML = "<li>Transaction id: " + o.tId + "</li>"; spanTag.innerHTML += "<li>HTTP status: " + o.status + "</li>"; spanTag.innerHTML += "<li>Status code message: " + o.statusText + "</li>"; } } var callback = { success:handleSuccess, failure: handleFailure //argument: { foo:"foo", bar:"bar" } }; var request = YAHOO.util.Connect.asyncRequest('GET', reqUrl, callback); }};};