JS基于ajax操作信息的使用

本文实例讲述了JavaScript基于ajax编辑信息的方法。分享给大家供大家参考。具体如下：

// Requires prototype.js
function edit(action, obj) {
 Element.hide(obj);
 var textarea ='<p id="' + obj.id + '_editor"><input type="text" id="' + obj.id + '_edit" name="' + obj.id + '" value="' + obj.innerHTML + '" size="40">';
 var button = '<input id="' + obj.id + '_save" type="button" value="SAVE" /> <input id="' + obj.id + '_cancel" type="button" value="CANCEL" /></p>';
 new Insertion.After(obj, textarea+button);
 Event.observe(obj.id+'_save', 'click', function(){saveChanges(action, obj)}, false);
 Event.observe(obj.id+'_cancel', 'click', function(){cleanUp(obj)}, false);
 $(obj.id+"_edit").focus();
 $(obj.id+"_edit").select();
}
function cleanUp(obj, keepEditable) {
 Element.remove(obj.id+'_editor');
 Element.show(obj);
 if(!keepEditable) showAsEditable(obj, true);
}
function saveChanges(action, obj) {
 var new_content = escape($F(obj.id+'_edit'));
 obj.innerHTML = "Saving...";
 cleanUp(obj, true);
 var success = function(t){editComplete(t, obj);}
 var failure = function(t){editFailed(t, obj);}
 var url = 'poll-ajax.php?a='+action;
 var pars = 'id=' + obj.id + '&content=' + new_content;
 var myAjax = new Ajax.Request(url, {method:'post', postBody:pars, onSuccess:success, onFailure:failure});
}
function editComplete(t, obj) {
 obj.innerHTML = t.responseText;
 showAsEditable(obj, true);
}
function editFailed(t, obj) {
 obj.innerHTML = 'Sorry, the update failed.';
 cleanUp(obj);
}

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