discuz中用到的javascript函数解析 原创
原创 更新时间:2008年05月28日 22:26:14 原创 作者:
discuz中用到的js不论是多浏览器兼容性和实用性都是非常不错的,推荐大家看下
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("<iframe name='" + ajaxframeid + "' id='" + ajaxframeid + "'></iframe>");
} 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($(\'' + x.div.id + '\'))', timeout);
}
if(!evaled && (typeof ajaxerror == 'undefined' || !ajaxerror)) {
if(x.div) x.div.innerHTML = '<div class="' + x.optionclass + '">' + s + '</div>';
showMenu(ctrlid, x.etype == 'click', 0, x.duration, x.timeout, 0, ctrlid, 400, 1);
if(func) setTimeout(func + '("' + ctrlid + '")', x.timeout);
//if(!cache && duration != 3 && x.div.id) setTimeout('document.body.removeChild($(\'' + 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<max; 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 = '<table><tbody id="'+showid.id+'_tbody">'+s+'</tbody></table>';
$('append_parent').appendChild(div1);
var trs = div1.getElementsByTagName('TR');
var l = trs.length;
for(var i=0; i<l; i++) {
showid.appendChild(trs[0]);
}
var inputs = div1.getElementsByTagName('INPUT');
var l = inputs.length;
for(var i=0; i<l; i++) {
showid.appendChild(inputs[0]);
}
div1.parentNode.removeChild(div1);
}
}
var hiddenobj = new Array();
var pmwinposition = new Array();
function pmwin(action, param) {
var objs = document.getElementsByTagName("OBJECT");
if(action == 'open') {
for(i = 0;i < objs.length; i ++) {
if(objs[i].style.visibility != 'hidden') {
objs[i].setAttribute("oldvisibility", objs[i].style.visibility);
objs[i].style.visibility = 'hidden';
}
}
var clientWidth = document.body.clientWidth;
var clientHeight = document.documentElement.clientHeight ? document.documentElement.clientHeight : document.body.clientHeight;
var scrollTop = document.body.scrollTop ? document.body.scrollTop : document.documentElement.scrollTop;
var pmwidth = 800;
var pmheight = clientHeight * 0.9;
if(!$('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 = '<div style="width: 800px; background: #666666; margin: 5px auto; text-align: left">' +
'<div style="width: 800px; height: ' + pmheight + 'px; padding: 1px; background: #FFFFFF; border: 1px solid #7597B8; position: relative; left: -6px; top: -3px">' +
'<div onmouseover="pmwindrag(this)" style="cursor: move; position: relative; left: 0px; top: 0px; width: 800px; height: 30px; margin-bottom: -30px;"></div>' +
'<a href="###" onclick="pmwin(\'close\')"><img style="position: absolute; right: 20px; top: 15px" src="' + IMGDIR +'/close.gif" title="关闭" /></a>' +
'<div id="pmwinmask" style="margin-top: 30px; position: absolute; width: 100%; height: 100%; display: none"></div><iframe id="pmframe" name="pmframe" style="width:' + pmwidth + 'px;height:100%" allowTransparency="true" frameborder="0"></iframe></div></div>';
}
$('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);
}
}
相关文章
JS提示:Uncaught SyntaxError:Unexpected token ) 错误的解决方法
这篇文章主要介绍了JS提示:Uncaught SyntaxError:Unexpected token ) 错误的解决方法,结合实例形式分析了javascript提示此类异常的常见原因与相关解决方法,需要的朋友可以参考下2016-08-08
最新评论