discuz中用到的javascript函数解析 原创
function ajaxupdateevents(obj, tagName) {
tagName = tagName ? tagName : 'A';
var objs = obj.getElementsByTagName(tagName);
for(k in objs) {
var o = objs[k];
ajaxupdateevent(o);
}
}
function ajaxupdateevent(o) {
if(typeof o == 'object' && o.getAttribute) {
if(o.getAttribute('ajaxtarget')) {
if(!o.id) o.id = Math.random();
var ajaxevent = o.getAttribute('ajaxevent') ? o.getAttribute('ajaxevent') : 'click';
var ajaxurl = o.getAttribute('ajaxurl') ? o.getAttribute('ajaxurl') : o.href;
_attachEvent(o, ajaxevent, newfunction('ajaxget', ajaxurl, o.getAttribute('ajaxtarget'), o.getAttribute('ajaxwaitid'), o.getAttribute('ajaxloading'), o.getAttribute('ajaxdisplay')));
if(o.getAttribute('ajaxfunc')) {
o.getAttribute('ajaxfunc').match(/(w+)((.+?))/);
_attachEvent(o, ajaxevent, newfunction(RegExp.$1, RegExp.$2));
}
}
}
}
/*
*@ url: 需求请求的 url
*@ id : 显示的 id
*@ waitid: 等待的 id,默认为显示的 id,如果 waitid 为空字符串,则不显示 loading..., 如果为 null,则在 showid 区域显示
*@ linkid: 是哪个链接触发的该 ajax 请求,该对象的属性(如 ajaxdisplay)保存了一些 ajax 请求过程需要的数据。
*/
function ajaxget(url, showid, waitid, loading, display, recall) {
waitid = typeof waitid == 'undefined' || waitid === null ? showid : waitid;
var x = new Ajax();
x.setLoading(loading);
x.setWaitId(waitid);
x.display = typeof display == 'undefined' || display == null ? '' : display;
x.showId = $(showid);
if(x.showId) x.showId.orgdisplay = typeof x.showId.orgdisplay === 'undefined' ? x.showId.style.display : x.showId.orgdisplay;
if(url.substr(strlen(url) - 1) == '#') {
url = url.substr(0, strlen(url) - 1);
x.autogoto = 1;
}
var url = url + '&inajax=1&ajaxtarget=' + showid;
x.get(url, function(s, x) {
evaled = false;
if(s.indexOf('ajaxerror') != -1) {
evalscript(s);
evaled = true;
}
if(!evaled && (typeof ajaxerror == 'undefined' || !ajaxerror)) {
if(x.showId) {
changedisplay(x.showId, x.showId.orgdisplay);
changedisplay(x.showId, x.display);
x.showId.orgdisplay = x.showId.style.display;
ajaxinnerhtml(x.showId, s);
ajaxupdateevents(x.showId);
if(x.autogoto) scroll(0, x.showId.offsetTop);
}
}
if(!evaled)evalscript(s);
ajaxerror = null;
if(recall) {eval(recall);}
});
}
var ajaxpostHandle = 0;
function ajaxpost(formid, showid, waitid) {
showloading();
var waitid = typeof waitid == 'undefined' || waitid === null ? showid : (waitid !== '' ? waitid : '');
if(ajaxpostHandle != 0) {
return false;
}
var ajaxframeid = 'ajaxframe';
var ajaxframe = $(ajaxframeid);
if(ajaxframe == null) {
if (is_ie && !is_opera) {
ajaxframe = document.createElement("");
} else {
ajaxframe = document.createElement("iframe");
ajaxframe.name = ajaxframeid;
ajaxframe.id = ajaxframeid;
}
//ajaxframe.id = ajaxframeid;
ajaxframe.style.display = 'none';
$('append_parent').appendChild(ajaxframe);
}
$(formid).target = ajaxframeid;
ajaxpostHandle = [showid, ajaxframeid, formid, $(formid).target];
if(ajaxframe.attachEvent) {
ajaxframe.detachEvent ('onload', ajaxpost_load);
ajaxframe.attachEvent('onload', ajaxpost_load);
} else {
document.removeEventListener('load', ajaxpost_load, true);
ajaxframe.addEventListener('load', ajaxpost_load, false);
}
$(formid).submit();
return false;
//$(waitid).innerHTML = 'Loading...';
}
function ajaxpost_load() {
showloading('none');
if(is_ie) {
var s = $(ajaxpostHandle[1]).contentWindow.document.XMLDocument.text;
} else {
var s = $(ajaxpostHandle[1]).contentWindow.document.documentElement.firstChild.nodeValue;
}
evaled = false;
if(s.indexOf('ajaxerror') != -1) {
evalscript(s);
evaled = true;
}
if(!evaled && (typeof ajaxerror == 'undefined' || !ajaxerror)) {
ajaxinnerhtml($(ajaxpostHandle[0]), s);
if(!evaled)evalscript(s);
setMenuPosition($(ajaxpostHandle[0]).ctrlid, 0);
setTimeout("hideMenu()", 3000);
}
ajaxerror = null;
if($(ajaxpostHandle[2])) {
$(ajaxpostHandle[2]).target = ajaxpostHandle[3];
//$(ajaxpostHandle[2]).removeChild($(ajaxpostHandle[1]));
}
ajaxpostHandle = 0;
}
function ajaxmenu(e, ctrlid, timeout, func, cache, duration, ismenu, divclass, optionclass) {
showloading();
if(jsmenu['active'][0] && jsmenu['active'][0].ctrlkey == ctrlid) {
hideMenu();
doane(e);
return;
} else if(is_ie && is_ie < 7 && document.readyState.toLowerCase() != 'complete') {
return;
}
if(isUndefined(timeout)) timeout = 3000;
if(isUndefined(func)) func = '';
if(isUndefined(cache)) cache = 1;
if(isUndefined(divclass)) divclass = 'popupmenu_popup';
if(isUndefined(optionclass)) optionclass = 'popupmenu_option';
if(isUndefined(ismenu)) ismenu = 1;
if(isUndefined(duration)) duration = timeout > 0 ? 0 : 3;
var div = $(ctrlid + '_menu');
if(cache && div) {
showMenu(ctrlid, e.type == 'click', 0, duration, timeout, 0, ctrlid, 400, 1);
if(func) setTimeout(func + '(' + ctrlid + ')', timeout);
doane(e);
} else {
if(!div) {
div = document.createElement('div');
div.ctrlid = ctrlid;
div.id = ctrlid + '_menu';
div.style.display = 'none';
div.className = divclass;
$('append_parent').appendChild(div);
}
var x = new Ajax();
var href = !isUndefined($(ctrlid).href) ? $(ctrlid).href : $(ctrlid).attributes['href'].value;
x.div = div;
x.etype = e.type;
x.optionclass = optionclass;
x.duration = duration;
x.timeout = timeout;
x.get(href + '&inajax=1&ajaxmenuid='+ctrlid+'_menu', function(s) {
evaled = false;
if(s.indexOf('ajaxerror') != -1) {
evalscript(s);
evaled = true;
if(!cache && duration != 3 && x.div.id) setTimeout('$("append_parent").removeChild($('' + x.div.id + ''))', timeout);
}
if(!evaled && (typeof ajaxerror == 'undefined' || !ajaxerror)) {
if(x.div) x.div.innerHTML = '';
showMenu(ctrlid, x.etype == 'click', 0, x.duration, x.timeout, 0, ctrlid, 400, 1);
if(func) setTimeout(func + '("' + ctrlid + '")', x.timeout);
//if(!cache && duration != 3 && x.div.id) setTimeout('document.body.removeChild($('' + x.div.id + ''))', timeout);
}
if(!evaled) evalscript(s);
ajaxerror = null;
showloading('none');
});
doane(e);
}
}
//得到一个定长的hash值, 依赖于 stringxor()
function hash(string, length) {
var length = length ? length : 32;
var start = 0;
var i = 0;
var result = '';
filllen = length - string.length % length;
for(i = 0; i < filllen; i++){
string += "0";
}
while(start < string.length) {
result = stringxor(result, string.substr(start, length));
start += length;
}
return result;
}
function stringxor(s1, s2) {
var s = '';
var hash = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
var max = Math.max(s1.length, s2.length);
for(var i=0; i var k = s1.charCodeAt(i) ^ s2.charCodeAt(i); s += hash.charAt(k % 52); } return s; } function showloading(display, waiting) { var display = display ? display : 'block'; var waiting = waiting ? waiting : 'Loading...'; $('ajaxwaitid').innerHTML = waiting; $('ajaxwaitid').style.display = display; } function ajaxinnerhtml(showid, s) { if(showid.tagName != 'TBODY') { showid.innerHTML = s; } else { while(showid.firstChild) { showid.firstChild.parentNode.removeChild(showid.firstChild); } var div1 = document.createElement('DIV'); div1.id = showid.id+'_div'; div1.innerHTML = '
$('append_parent').appendChild(div1);
var trs = div1.getElementsByTagName('TR');
var l = trs.length;
for(var i=0; i showid.appendChild(trs[0]); } var inputs = div1.getElementsByTagName('INPUT'); var l = inputs.length; for(var i=0; i showid.appendChild(inputs[0]); } div1.parentNode.removeChild(div1); } } var hiddenobj = new Array(); var pmwinposition = new Array(); function pmwin(action, param) { var objs = document.getElementsByTagName("OBJECT"); if(action == 'open') { for(i = 0;i < objs.length; i ++) { if(objs[i].style.visibility != 'hidden') { objs[i].setAttribute("oldvisibility", objs[i].style.visibility); objs[i].style.visibility = 'hidden'; } } var clientWidth = document.body.clientWidth; var clientHeight = document.documentElement.clientHeight ? document.documentElement.clientHeight : document.body.clientHeight; var scrollTop = document.body.scrollTop ? document.body.scrollTop : document.documentElement.scrollTop; var pmwidth = 800; var pmheight = clientHeight * 0.9; if(!$('pmlayer')) { div = document.createElement('div');div.id = 'pmlayer'; div.style.width = pmwidth + 'px'; div.style.height = pmheight + 'px'; div.style.left = ((clientWidth - pmwidth) / 2) + 'px'; div.style.position = 'absolute'; div.style.zIndex = '999'; $('append_parent').appendChild(div); $('pmlayer').innerHTML = ' ' ' '' + ' } $('pmlayer').style.display = ''; $('pmlayer').style.top = ((clientHeight - pmheight) / 2 + scrollTop) + 'px'; if(!param) { pmframe.location = 'pm.php'; } else { pmframe.location = 'pm.php?' + param; } } else if(action == 'close') { for(i = 0;i < objs.length; i ++) { if(objs[i].attributes['oldvisibility']) { objs[i].style.visibility = objs[i].attributes['oldvisibility'].nodeValue; objs[i].removeAttribute('oldvisibility'); } } hiddenobj = new Array(); $('pmlayer').style.display = 'none'; } } var pmwindragstart = new Array(); function pmwindrag(obj) { obj.onmousedown = function(e) { if(is_ie) { document.body.onselectstart = function() { return false; } } pmwindragstart = is_ie ? [event.clientX, event.clientY] : [e.clientX, e.clientY]; pmwindragstart[2] = parseInt($('pmlayer').style.left); pmwindragstart[3] = parseInt($('pmlayer').style.top); $('pmwinmask').style.display = ''; doane(e); } _attachEvent(document.body, 'mousemove', function(e) { if(pmwindragstart[0]) { var pmwindragnow = is_ie ? [event.clientX, event.clientY] : [e.clientX, e.clientY]; with($('pmlayer')) { style.left = (pmwindragstart[2] + pmwindragnow[0] - pmwindragstart[0]) + 'px'; style.top = (pmwindragstart[3] + pmwindragnow[1] - pmwindragstart[1]) + 'px'; } doane(e); } }); obj.onmouseup = function(e) { if(is_ie) { document.body.onselectstart = function() { return true; } } pmwindragstart = []; $('pmwinmask').style.display = 'none'; doane(e); } obj.onmouseover = null; } function pmchecknew() { ajaxget('pm.php?checknewpm=' + Math.random(), 'pmnotice', 'ajaxwaitid'); } var discuz_uid = isUndefined(discuz_uid) ? 0 : discuz_uid; if(discuz_uid && !getcookie('checkpm') && typeof IN_ADMINCP == 'undefined') { if(document.attachEvent) { window.attachEvent('onload', pmchecknew); } else { window.addEventListener('load', pmchecknew, false); } } 您可能感兴趣的文章:
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