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我最近在我的腳本中出現了奇怪的問題，並且不確定是什麼原因導致此問題發生。它主要在Chrome瀏覽器上彈出，我猜這個功能'offsetHeight'已被棄用或無效。 這裏是全碼：無法讀取屬性'offsetHeight'null
var Rep_Templates = {
// array of pre-defined reasons
answers: null,
// popup container
context_menu: null,
// popup copntiner height
menu_height: 0,
error_msg: null,
// ajax form and its param values
pseudoform: null,
url: null,
postid: 0,
// information phrases to display to user
thanks_phrase: '',
description_msg: '',
timer_id: null,
/**
* inits the popup
* @param answers array of pre-defined reasons
* @param error_msg to display in case of empty message
* @param url of current page
* @param thanks_phrase diaplyed after successful submission
*/
init: function(answers, url, phrases) {
if (AJAX_Compatible)
{
this.answers = answers;
this.error_msg = phrases['error'];
this.thanks_phrase = phrases['thanks'];
this.description_msg = phrases['description'];
this.context_menu = new YAHOO.widget.Menu("rep_tmpl_popup",
{clicktohide: false,
effect: {
effect: YAHOO.widget.ContainerEffect.FADE,
duration: 0.25
}});
// Fix for IE7 z-index bug
if (YAHOO.env.ua.ie && YAHOO.env.ua.ie < 8)
{
this.context_menu.cfg.setProperty("position", "dynamic");
this.context_menu.cfg.setProperty("iframe", true);
this.context_menu.cfg.setProperty("zindex", 10100);
}
this.context_menu.render(document.body);
var menu_object = fetch_object("rep_tmpl_menu_inner");
this.menu_height = menu_object.offsetHeight;
var links = YAHOO.util.Dom.getElementsByClassName("report", "a", document.body);
for (var i = 0; i < links .length; i++) {
var index = links[i].href.indexOf("p=");
if (index > 0)
{
var postid = links[i].href.substr(index+2);
YAHOO.util.Event.on(links[i], "click", this.show_popup, postid);
}
}
this.pseudoform = new vB_Hidden_Form('ajax.php');
this.pseudoform.add_variable('ajax', 1);
this.pseudoform.add_variable('s', fetch_sessionhash());
this.pseudoform.add_variable('securitytoken', SECURITYTOKEN);
this.pseudoform.add_variable('do', 'email_report');
this.url = url;
}
},
/**
* inserts pre-defined reason into textarea
* @param id of selected reason
*/
set_answer: function(id) {
var textarea = fetch_object('rep_tmpl_message');
textarea.value = '';
if (id > 0 && id <= this.answers.length)
{
textarea.value = this.answers[id-1];
var error_msg = fetch_object('rep_tmpl_error');
error_msg.innerHTML = "";
}
},
/**
* show popup to the user
* @param event click event
* @param postid id of the post
*/
show_popup: function(event,postid) {
Rep_Templates.reset_data();
YAHOO.util.Event.stopEvent(event);
var elem = event.srcElement? event.srcElement : event.target;
Rep_Templates.postid = postid;
var xy = [0,0];
xy[0] = YAHOO.util.Dom.getX(elem) + 25;
xy[1] = YAHOO.util.Dom.getY(elem) - Rep_Templates.menu_height;
if (xy[1] < 0)
{
xy[1] = 0;
}
Rep_Templates.context_menu.moveTo(xy[0],xy[1]);
Rep_Templates.context_menu.show();
fetch_object('rep_tmpl_message').focus();
YAHOO.util.Event.on(document.body, "click", Rep_Templates.hide_menu);
},
/**
* hides the menu when users click Hide button or click outside of the popup. Resets data
* @param optional event. If specified, then user clicked outside.
*/
hide_menu: function(event) {
var is_inside = false;
if (event)
{
// check if click was inside or outside popup
var obj = event.srcElement? event.srcElement : event.target;
do {
if (obj.id == 'rep_tmpl_popup') {
is_inside = true;
break;
}
} while (obj = obj.parentNode);
if (!is_inside)
{
YAHOO.util.Event.removeListener(document.body, "click", Rep_Templates.hide_menu);
}
}
if (!event || !is_inside)
{
Rep_Templates.context_menu.hide();
Rep_Templates.postid = 0;
}
},
/**
* reset all fields with default values
*/
reset_data: function() {
var error_msg = fetch_object('rep_tmpl_error');
error_msg.innerHTML = "";
var phrase = fetch_object('rep_tmpl_phrase');
phrase.innerHTML = this.description_msg;
YAHOO.util.Dom.removeClass(phrase, 'rep_tmpl_thanks_message');
var button = fetch_object('rep_tmpl_submit');
YAHOO.util.Dom.removeClass(button, 'disabled');
button.disabled = false;
var image = fetch_object('rep_tmpl_progress');
image.style.display = 'none';
},
/**
* sends AJAX request
* @param event click event
*/
send_data: function(event) {
var textarea = fetch_object('rep_tmpl_message');
if (textarea && textarea.value.replace(/^\s\s*/, '').replace(/\s\s*$/, '') != '')
{
this.pseudoform.add_variable('postid', this.postid);
this.pseudoform.add_variable('url',this.url + "&p="+ this.postid + "#post" + this.postid);
var button = event.srcElement? event.srcElement : event.target;
button.disabled = true;
YAHOO.util.Dom.addClass(button, 'disabled');
var image = fetch_object('rep_tmpl_progress');
image.style.display = '';
YAHOO.util.Connect.asyncRequest("POST", 'ajax.php', {
success: this.handle_ajax_response,
failure: vBulletin_AJAX_Error_Handler,
timeout: vB_Default_Timeout,
scope: this
}, this.pseudoform.build_query_string() + '&reason=' + textarea.value);
}
else
{
var error_msg = fetch_object('rep_tmpl_error');
error_msg.innerHTML = this.error_msg;
}
return false;
},
/**
* handles AJAX request
* @param ajax data returned
*/
handle_ajax_response: function(ajax) {
if (ajax.responseXML)
{
// check for error first
var error = ajax.responseXML.getElementsByTagName('error');
if (error.length)
{
this.reset_data();
var error_msg = fetch_object('rep_tmpl_error');
error_msg.innerHTML = error[0].firstChild.nodeValue;
}
else
{
var result = ajax.responseXML.getElementsByTagName('result');
if (result.length)
{
var image = fetch_object('rep_tmpl_progress');
image.style.display = 'none';
var phrase = fetch_object('rep_tmpl_phrase');
phrase.innerHTML = this.thanks_phrase;
YAHOO.util.Dom.addClass(phrase, 'rep_tmpl_thanks_message');
this.timer_id = setTimeout('Rep_Templates.handle_timer_expiration()',1000);
}
}
}
},
/**
* hides popup on timer expiration
*/
handle_timer_expiration: function() {
clearTimeout(this.timer_id);
this.hide_menu();
}
}
任何想法如何解決這個問題！
感謝
函數fetch_object是什麼？ –