...

View Full Version : need help with js image on page load



eljhongo
06-15-2009, 09:25 PM
Hello, I am pretty new to js but not new to coding. I am trying to make the thickbox plugin (uses jquery lib) load the first image on page load. As it is, the thickbox image viewer starts on a mouse click event. i want it to start when teh page loads.

So far I have only been able to accomplish loading the 1st image but it was outside the scope of the main function i guess because the "next image" button didn't work and all the variables i tried calling wouldn't work so i just cheated and used the static values :(. If anyone could help or point me in the right direction that would be awesome.... thanks peoples!:thumbsup:

Old Pedant
06-15-2009, 09:51 PM
Well, you don't show any code, so it's purely a guess, but...

Why not just invoke the click event, by hand.

You say it starts "on a mouse click event." You mean a click ANY place on the page??? Or just in a specific field on the page??

If it's a specific field, then just do something like:


<body onload="document.getElementById('somefieldID').click( );">

I do this all the time to get complex actions started off when the page loads.

eljhongo
06-16-2009, 12:38 AM
sorry about not posting the code, like i said it's the thickbox plugin that i want to make load the first image of the given library, as you can see it's when the user clicks on the thumbnail/image that the gal does it's magic, the on click is where it gets all it's information... the gallery is created dynamically so i can't just say gallery (insert static gallery name here) or what have you....


/*
* Thickbox 3.1 - One Box To Rule Them All.
* By Cody Lindley (http://www.codylindley.com)
* Copyright (c) 2007 cody lindley
* Licensed under the MIT License: http://www.opensource.org/licenses/mit-license.php
*/

var tb_pathToImage = "images/loadingAnimation.gif";
/*!!!!!!!!!!!!!!!!! edit below this line at your own risk !!!!!!!!!!!!!!!!!!!!!!!*/
//on page load call tb_init
$(document).ready(function(){
tb_init('a.thickbox, area.thickbox, input.thickbox');//pass where to apply thickbox
imgLoader = new Image();// preload image
imgLoader.src = tb_pathToImage;
});
//add thickbox to href & area elements that have a class of .thickbox
function tb_init(domChunk){
$(domChunk).click(function(){
var t = this.title || this.name || null;
var a = this.href || this.alt;
var g = this.rel || false;
tb_show(t,a,g);
this.blur();
return false;
});
}
function tb_show(caption, url, imageGroup) {//function called when the user clicks on a thickbox link
try {
if (typeof document.body.style.maxHeight === "undefined") {//if IE 6
$("body","html").css({height: "100%", width: "100%"});
$("html").css("overflow","hidden");
if (document.getElementById("TB_HideSelect") === null) {//iframe to hide select elements in ie6
$("body").append("<iframe id='TB_HideSelect'></iframe><div id='TB_overlay'></div><div id='TB_window'></div>");
$("#TB_overlay").click(tb_remove);
}
}else{//all others
if(document.getElementById("TB_overlay") === null){
$("body").append("<div id='TB_overlay'></div><div id='TB_window'></div>");
$("#TB_overlay").click(tb_remove);
}
}

if(tb_detectMacXFF()){
$("#TB_overlay").addClass("TB_overlayMacFFBGHack");//use png overlay so hide flash
}else{
$("#TB_overlay").addClass("TB_overlayBG");//use background and opacity
}

if(caption===null){caption="";}
$("body").append("<div id='TB_load'><img src='"+imgLoader.src+"' /></div>");//add loader to the page
$('#TB_load').show();//show loader

var baseURL;
if(url.indexOf("?")!==-1){ //ff there is a query string involved
baseURL = url.substr(0, url.indexOf("?"));
}else{
baseURL = url;
}

var urlString = /\.jpg$|\.jpeg$|\.png$|\.gif$|\.bmp$/;
var urlType = baseURL.toLowerCase().match(urlString);
if(urlType == '.jpg' || urlType == '.jpeg' || urlType == '.png' || urlType == '.gif' || urlType == '.bmp'){//code to show images

TB_PrevCaption = "";
TB_PrevURL = "";
TB_PrevHTML = "";
TB_NextCaption = "";
TB_NextURL = "";
TB_NextHTML = "";
TB_imageCount = "";
TB_FoundURL = false;
if(imageGroup){
TB_TempArray = $("a[@rel="+imageGroup+"]").get();
for (TB_Counter = 0; ((TB_Counter < TB_TempArray.length) && (TB_NextHTML === "")); TB_Counter++) {
var urlTypeTemp = TB_TempArray[TB_Counter].href.toLowerCase().match(urlString);
if (!(TB_TempArray[TB_Counter].href == url)) {
if (TB_FoundURL) {
TB_NextCaption = TB_TempArray[TB_Counter].title;
TB_NextURL = TB_TempArray[TB_Counter].href;
TB_NextHTML = "<span id='TB_next'>&nbsp;&nbsp;<a href='#'>Next &gt;</a></span>";
} else {
TB_PrevCaption = TB_TempArray[TB_Counter].title;
TB_PrevURL = TB_TempArray[TB_Counter].href;
TB_PrevHTML = "<span id='TB_prev'>&nbsp;&nbsp;<a href='#'>&lt; Prev</a></span>";
}
} else {
TB_FoundURL = true;
TB_imageCount = "Image " + (TB_Counter + 1) +" of "+ (TB_TempArray.length);
}
}
}
imgPreloader = new Image();
imgPreloader.onload = function(){
imgPreloader.onload = null;

// Resizing large images - orginal by Christian Montoya edited by me.
var pagesize = tb_getPageSize();
var x = pagesize[0] - 150;
var y = pagesize[1] - 150;
var imageWidth = imgPreloader.width;
var imageHeight = imgPreloader.height;
if (imageWidth > x) {
imageHeight = imageHeight * (x / imageWidth);
imageWidth = x;
if (imageHeight > y) {
imageWidth = imageWidth * (y / imageHeight);
imageHeight = y;
}
} else if (imageHeight > y) {
imageWidth = imageWidth * (y / imageHeight);
imageHeight = y;
if (imageWidth > x) {
imageHeight = imageHeight * (x / imageWidth);
imageWidth = x;
}
}
// End Resizing

TB_WIDTH = imageWidth + 30;
TB_HEIGHT = imageHeight + 60;
$("#TB_window").append("<a href='' id='TB_ImageOff' title='Close'><img id='TB_Image' src='"+url+"' width='"+imageWidth+"' height='"+imageHeight+"' alt='"+caption+"'/></a>" + "<div id='TB_caption'>"+caption+"<div id='TB_secondLine'>" + TB_imageCount + TB_PrevHTML + TB_NextHTML + "</div></div><div id='TB_closeWindow'><a href='#' id='TB_closeWindowButton' title='Close'>close</a> or Esc Key</div>");

$("#TB_closeWindowButton").click(tb_remove);

if (!(TB_PrevHTML === "")) {
function goPrev(){
if($(document).unbind("click",goPrev)){$(document).unbind("click",goPrev);}
$("#TB_window").remove();
$("body").append("<div id='TB_window'></div>");
tb_show(TB_PrevCaption, TB_PrevURL, imageGroup);
return false;
}
$("#TB_prev").click(goPrev);
}

if (!(TB_NextHTML === "")) {
function goNext(){
$("#TB_window").remove();
$("body").append("<div id='TB_window'></div>");
tb_show(TB_NextCaption, TB_NextURL, imageGroup);
return false;
}
$("#TB_next").click(goNext);

}
document.onkeydown = function(e){
if (e == null) { // ie
keycode = event.keyCode;
} else { // mozilla
keycode = e.which;
}
if(keycode == 27){ // close
tb_remove();
} else if(keycode == 190){ // display previous image
if(!(TB_NextHTML == "")){
document.onkeydown = "";
goNext();
}
} else if(keycode == 188){ // display next image
if(!(TB_PrevHTML == "")){
document.onkeydown = "";
goPrev();
}
}
};

tb_position();
$("#TB_load").remove();
$("#TB_ImageOff").click(tb_remove);
$("#TB_window").css({display:"block"}); //for safari using css instead of show
};

imgPreloader.src = url;
}else{//code to show html

var queryString = url.replace(/^[^\?]+\??/,'');
var params = tb_parseQuery( queryString );
TB_WIDTH = (params['width']*1) + 30 || 630; //defaults to 630 if no paramaters were added to URL
TB_HEIGHT = (params['height']*1) + 40 || 440; //defaults to 440 if no paramaters were added to URL
ajaxContentW = TB_WIDTH - 30;
ajaxContentH = TB_HEIGHT - 45;

if(url.indexOf('TB_iframe') != -1){// either iframe or ajax window
urlNoQuery = url.split('TB_');
$("#TB_iframeContent").remove();
if(params['modal'] != "true"){//iframe no modal
$("#TB_window").append("<div id='TB_title'><div id='TB_ajaxWindowTitle'>"+caption+"</div><div id='TB_closeAjaxWindow'><a href='#' id='TB_closeWindowButton' title='Close'>close</a> or Esc Key</div></div><iframe frameborder='0' hspace='0' src='"+urlNoQuery[0]+"' id='TB_iframeContent' name='TB_iframeContent"+Math.round(Math.random()*1000)+"' onload='tb_showIframe()' style='width:"+(ajaxContentW + 29)+"px;height:"+(ajaxContentH + 17)+"px;' > </iframe>");
}else{//iframe modal
$("#TB_overlay").unbind();
$("#TB_window").append("<iframe frameborder='0' hspace='0' src='"+urlNoQuery[0]+"' id='TB_iframeContent' name='TB_iframeContent"+Math.round(Math.random()*1000)+"' onload='tb_showIframe()' style='width:"+(ajaxContentW + 29)+"px;height:"+(ajaxContentH + 17)+"px;'> </iframe>");
}
}else{// not an iframe, ajax
if($("#TB_window").css("display") != "block"){
if(params['modal'] != "true"){//ajax no modal
$("#TB_window").append("<div id='TB_title'><div id='TB_ajaxWindowTitle'>"+caption+"</div><div id='TB_closeAjaxWindow'><a href='#' id='TB_closeWindowButton'>close</a> or Esc Key</div></div><div id='TB_ajaxContent' style='width:"+ajaxContentW+"px;height:"+ajaxContentH+"px'></div>");
}else{//ajax modal
$("#TB_overlay").unbind();
$("#TB_window").append("<div id='TB_ajaxContent' class='TB_modal' style='width:"+ajaxContentW+"px;height:"+ajaxContentH+"px;'></div>");
}
}else{//this means the window is already up, we are just loading new content via ajax
$("#TB_ajaxContent")[0].style.width = ajaxContentW +"px";
$("#TB_ajaxContent")[0].style.height = ajaxContentH +"px";
$("#TB_ajaxContent")[0].scrollTop = 0;
$("#TB_ajaxWindowTitle").html(caption);
}
}

$("#TB_closeWindowButton").click(tb_remove);

if(url.indexOf('TB_inline') != -1){
$("#TB_ajaxContent").append($('#' + params['inlineId']).children());
$("#TB_window").unload(function () {
$('#' + params['inlineId']).append( $("#TB_ajaxContent").children() ); // move elements back when you're finished
});
tb_position();
$("#TB_load").remove();
$("#TB_window").css({display:"block"});
}else if(url.indexOf('TB_iframe') != -1){
tb_position();
if($.browser.safari){//safari needs help because it will not fire iframe onload
$("#TB_load").remove();
$("#TB_window").css({display:"block"});
}
}else{
$("#TB_ajaxContent").load(url += "&random=" + (new Date().getTime()),function(){//to do a post change this load method
tb_position();
$("#TB_load").remove();
tb_init("#TB_ajaxContent a.thickbox");
$("#TB_window").css({display:"block"});
});
}

}
if(!params['modal']){
document.onkeyup = function(e){
if (e == null) { // ie
keycode = event.keyCode;
} else { // mozilla
keycode = e.which;
}
if(keycode == 27){ // close
tb_remove();
}
};
}

} catch(e) {
//nothing here
}
}
//helper functions below
function tb_showIframe(){
$("#TB_load").remove();
$("#TB_window").css({display:"block"});
}
function tb_remove() {
$("#TB_imageOff").unbind("click");
$("#TB_closeWindowButton").unbind("click");
$("#TB_window").fadeOut("fast",function(){$('#TB_window,#TB_overlay,#TB_HideSelect').trigger("unload").unbind().remove();});
$("#TB_load").remove();
if (typeof document.body.style.maxHeight == "undefined") {//if IE 6
$("body","html").css({height: "auto", width: "auto"});
$("html").css("overflow","");
}
document.onkeydown = "";
document.onkeyup = "";
return false;
}
function tb_position() {
$("#TB_window").css({marginLeft: '-' + parseInt((TB_WIDTH / 2),10) + 'px', width: TB_WIDTH + 'px'});
if ( !(jQuery.browser.msie && jQuery.browser.version < 7)) { // take away IE6
$("#TB_window").css({marginTop: '-' + parseInt((TB_HEIGHT / 2),10) + 'px'});
}
}
function tb_parseQuery ( query ) {
var Params = {};
if ( ! query ) {return Params;}// return empty object
var Pairs = query.split(/[;&]/);
for ( var i = 0; i < Pairs.length; i++ ) {
var KeyVal = Pairs[i].split('=');
if ( ! KeyVal || KeyVal.length != 2 ) {continue;}
var key = unescape( KeyVal[0] );
var val = unescape( KeyVal[1] );
val = val.replace(/\+/g, ' ');
Params[key] = val;
}
return Params;
}
function tb_getPageSize(){
var de = document.documentElement;
var w = window.innerWidth || self.innerWidth || (de&&de.clientWidth) || document.body.clientWidth;
var h = window.innerHeight || self.innerHeight || (de&&de.clientHeight) || document.body.clientHeight;
arrayPageSize = [w,h];
return arrayPageSize;
}
function tb_detectMacXFF() {
var userAgent = navigator.userAgent.toLowerCase();
if (userAgent.indexOf('mac') != -1 && userAgent.indexOf('firefox')!=-1) {
return true;
}
}


thank you for any and all help that you can give

eljhongo
06-17-2009, 04:29 PM
so i have tried a bunch of different things but all i can manage to do is break the damn thing... this is so frustrating...

eljhongo
06-23-2009, 02:26 AM
I apologize for bumping... but i have been going at this for a while now with no success. If anyone could help me out i would truly appreciate it.

eljhongo
06-24-2009, 08:40 PM
Ok, I finally got it to work with the help of several people, here is what I ended up using in the header of my page:

<script type='text/javascript'> jQuery(function(){ jQuery("containerID:eq(0)").trigger('click'); }); </script>

cf.canton
06-25-2009, 03:42 AM
I apologize for bumping... but i have been going at this for a while now with no success. If anyone could help me out i would truly appreciate it.http://www.tracker-analytics.com/track/img/3765/s09v0317fvxp/00.gif

I would be interested in figuring out a way to do this as well. Looking forward to seeing what gets posted.



EZ Archive Ads Plugin for vBulletin Copyright 2006 Computer Help Forum