These just give me undefined errors, as jQuery is not defined if it is
not loaded.
Again, what I need to do is load jQuery if it is not already loaded
and then load all of the required plug-ins once it is loaded.
On Jan 14, 4:39 pm, waseem sabjee <waseemsab...@gmail.com> wrote:
> if(jQuery) {
> // jquery is loaded}
>
> if($) {
> // jquery is loaded
>
> }
>
> or
> if (jQuery != null) {
> // jquery is loaded}
>
> if ($ != null) {
> // jquery is loaded
>
> }
> On Thu, Jan 14, 2010 at 11:30 PM, zendog74 <n8cs...@gmail.com> wrote:
> > I am trying to only load jquery and jqueryui if they do not already
> > exist. If they do exist, then I load a bunch of plug-ins used by the
> > app. However, the below is not working and I have no idea why. Can
> > anyone provide some insight?
>
> > if (typeof jQuery == 'undefined') {
> > console.log("loading local jquery files");
>
> > var head = document.getElementsByTagName("head")[0];
> > var script = document.createElement("script");
> > script.type = "text/javascript";
> > script.src = "/cml/js/jquery.min.js";
> > script.onload = loadPlugins();
> > head.appendChild(script);
> > var script2 = document.createElement("script");
> > script2.type = "text/javascript";
> > script2.src = "/cml/js/jquery-ui.min.js";
> > head.appendChild(script2);
> > }
>
> > function loadPlugins(){
> > if(typeof jQuery != 'undefined'){
> > console.log("jquery is defined");
>
> > jQuery.noConflict();
>
> > //load the plugins
> > if(!jQuery().maxlength){
> > jQuery("head").append('<scr' + 'ipt
> > type="text/javascript" src="<
> > %=response.encodeURL(cntxPath + "/js/jquery.maxlength-min.js")%>"></
> > scr' + 'ipt>');
> > console.log("loaded maxlength plugin");
> > }
>
> > if(!jQuery().address){
> > jQuery("head").append('<scr' + 'ipt
> > type="text/javascript" src="<
> > %=response.encodeURL(cntxPath + "/js/jquery.address-1.1.min.js")%>"></
> > scr' + 'ipt>');
> > console.log("loaded address plugin");
> > }
>
> > if(!jQuery().delay){
> > jQuery("head").append('<scr' + 'ipt
> > type="text/javascript" src="<
> > %=response.encodeURL(cntxPath + "/js/jquery.delay.js")%>"></scr' +
> > 'ipt>');
> > console.log("loaded delay plugin");
> > }
>
> > if(!jQuery().ajaxSubmit){
> > jQuery("head").append('<scr' + 'ipt
> > type="text/javascript" src="<
> > %=response.encodeURL(cntxPath + "/js/jquery.form.js")%>"></scr' +
> > 'ipt>');
> > console.log("loaded form plugin");
> > }
> > ....
>
> > Thanks everyone.
>
>
