Use of JS based on ajax operation information

This time I will bring you the use of JS based on ajax operation information. What are the precautions for JS based on ajax operation information. The following is a practical case, let's take a look.

The example of this article describes the JavaScript method of editing information based on ajax. Share it with everyone for your reference. The details are as follows:

// Requires prototype.js
function edit(action, obj) {
  Element.hide(obj);
  var textarea ='<p id="&#39; + obj.id + &#39;_editor"><input type="text" id="&#39; + obj.id + &#39;_edit" name="&#39; + obj.id + &#39;" value="&#39; + obj.innerHTML + &#39;" size="40">';
  var button = '<input id="&#39; + obj.id + &#39;_save" type="button" value="SAVE" /> <input id="&#39; + obj.id + &#39;_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);
}

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Recommended reading:

How to partially update the Razor page

Ajax implements Loading effect

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