It looks odd, why did you comment out the function header?
This will look more reasonable (untested)
JS=: 0 : 0 NB. javascript
// function ev_roll_click(){jsubmit();} // submit form - calls J
function ev_roll_click(){
var canvas = $("#myCanvas");
var context = canvas.get(0).getContext("2d");
context.fillRect(40, 40, 100, 100);
}
)
Сб, 14 сен 2013, Brian Schott писал(а):
> Continuing, I edited/added the following code to test2.ijs and ran and
> saved the code while in JHS.
>
> HBS=: 0 : 0
> jhh1 'hello world'
> '<canvas id="myCanvas" width="500" height="500"> </canvas>'
> )
>
> JS=: 0 : 0 NB. javascript
> // function ev_roll_click(){jsubmit();} // submit form - calls J
> ev_roll_click
> var canvas = $("#myCanvas");
> var context = canvas.get(0).getContext("2d");
> context.fillRect(40, 40, 100, 100);
> )
>
> But I see no change in the `hello` tab even after a refresh. My only
> response in the jijx window was the following.
>
> |value error: jev_get_test2_
>
> | jev_get_test2_''
>
> *** response not sent for test2
>
> *** html409 Conflict
>
> I continued trying to get more info in the jijx window as shown below (the
> vast majority below is the result of entering ` LASTRESPONSE_test2_` .
> But I do not have a clue what to try next. Help, please.
>
>
> **********longish session in jijx below*********
>
> names_test2_ ''
>
> CSS HBS JS LASTRESPONSE create jev_get
>
> JS_test2_
>
> // function ev_roll_click(){jsubmit();} // submit form - calls J ev_roll_click
>
> var canvas = $("#myCanvas");
>
> var context = canvas.get(0).getContext("2d");
>
> context.fillRect(40, 40, 100, 100);
>
> LASTRESPONSE_test2_
>
> ...
>
> return 1;
>
> }
>
>
> // focus if hml/jmab - return 1 if focus is done
>
> function jmenunavfocus(m,n)
>
> {
>
> if(2!=jmenunavinfo(m,n))return 0;
>
> m[n].focus();
>
> return 1;
>
> }
>
>
> // return m[n] info - 0 none, 1 hmg, 2 hml or hmab
>
> function jmenunavinfo(m,n)
>
> {
>
> if(n==m.length)return 0;
>
> return ("jhmg"==m[n].getAttribute("class"))?1:2
>
> }
>
>
> // activate menu group n
>
> function jactivatemenu(n)
>
> {
>
> jmenuhide();
>
> var node= jfindmenu(n);
>
> if('undefined'==typeof node) return;
>
> node.focus();
>
> }
>
>
> var menublock= null; // menu ul element with display:block
>
> var menulast= null; // menu ul element just hidden
>
>
> function jmenuclick(ev)
>
> {
>
> jmenuhide(ev);
>
> var e=window.event||ev;
>
> var tar=(typeof e.target=='undefined')?e.srcElement:e.target;
>
> var id=tar.id;
>
> var idul= id+"_ul";
>
> jbyid(id).focus(); // required on mac
>
> if(jbyid(idul).style.display=="block")
>
> {
>
> menublock= null;
>
> jbyid(idul).style.display= "none";
>
> }
>
> else
>
> {
>
> if(menulast!=jbyid(idul))
>
> {
>
> menublock= jbyid(idul);
>
> menublock.style.display= "block";
>
> }
>
> }
>
> }
>
>
> function jmenushow(node)
>
> {
>
> jmenuhide();
>
> var id=node.id;
>
> var idul= id+"_ul";
>
> menublock= jbyid(idul);
>
> menublock.style.display= "block";
>
> }
>
>
> function jmenuhide()
>
> {
>
> if(tmenuid!=0) clearTimeout(tmenuid);
>
> tmenuid= 0;
>
> menulast= menublock;
>
> if(menublock!=null) menublock.style.display= "none";
>
> menublock= null;
>
> return true;
>
> }
>
>
> // browser differences
>
> // safari/chrome onblur on mousedown and onfocus on mouseup
>
> // onblur will hide the menu 250 after mousedown (no clear)
>
> // so menu item click needs to be quick
>
>
> var tmenuid= 0;
>
>
> function jmenublur(ev)
>
> {
>
> if(tmenuid!=0) clearTimeout(tmenuid);
>
> tmenuid= setTimeout(jmenuhide,500)
>
> return true;
>
> }
>
>
> function jmenufocus(ev)
>
> {
>
> if(tmenuid!=0) clearTimeout(tmenuid);
>
> tmenuid= 0;
>
> return true;
>
> }
>
>
> function jmenukeydown(ev)
>
> {
>
> var e=window.event||ev;
>
> var c=e.keyCode;
>
> return(c>36&&c<41)?false:true;
>
> }
>
>
> function jmenukeypress(ev)
>
> {
>
> var e=window.event||ev;
>
> var c=e.keyCode;
>
> return(c>36&&c<41)?false:true;
>
> }
>
>
> function jmenukeyup(ev)
>
> {
>
> var e=window.event||ev;
>
> var c=e.keyCode;
>
> if(c<37||c>40)return false;
>
> var tar=(typeof e.target=='undefined')?e.srcElement:e.target;
>
> jmenunav(tar,c);
>
> return true;
>
> }
>
>
>
> // get pixel... - sizing/resizing
>
>
> // window.onresize= resize; // required for resize
>
> // and resize should be called in ev_body_load
>
>
> // the ...h functions need simple changes to
>
> // become the corresponding set of w functions
>
>
> // body{background:aqua} can be useful in
>
> // finding out why calculations turn out wrong
>
>
> // IF and FF both have bugs with <h1>...</h1>
>
> // vs these calculations and <hx> should not
>
> // be used where resizing will be used
>
>
> // get pixel window height
>
> function jgpwindowh()
>
> {
>
> if(window.innerHeight)
>
> return window.innerHeight; // not IE
>
> else
>
> return document.documentElement.clientHeight;
>
> }
>
>
> // get pixel body margin height (top+bottom)
>
> function jgpbodymh()
>
> {
>
> var h;
>
> if(window.getComputedStyle)
>
> {
>
> h= parseInt(window.getComputedStyle(document.body,null).marginTop);
>
> h+= parseInt(window.getComputedStyle(document.body,null).marginBottom);
>
> }
>
> else
>
> {
>
> h= parseInt(document.body.currentStyle.marginTop);
>
> h+= parseInt(document.body.currentStyle.marginBottom);
>
> }
>
> return h;
>
> }
>
>
> // get pixel div height - IE/FF bugs vs <h1>
>
> function jgpdivh(id){return jbyid(id).offsetHeight;}
>
>
> /*
>
> function jgpdivh(id)
>
> {
>
> var e=jbyid(id);
>
> if(e==null)return 50;
>
> //alert(e+" "+id);
>
> // alert(e.offsetHeight);
>
> //return jbyid(id).offsetHeight;
>
> var v=e.offsetHeight;
>
> //alert(id+" "+v);
>
> return v;
>
> }
>
> */
>
>
> // get pixel end
>
>
> // debug
>
>
> // numbers from unicode
>
> function debcodes(t)
>
> {
>
> r= "";
>
> for(var i=0;i<t.length;++i)
>
> r= r+" "+t.charCodeAt(i);
>
> return r;
>
> }
>
>
> // eval js sentences in s
>
> // a is true in ajax and false in refresh
>
> function jseval(ajax,s)
>
> {
>
> var i,j,a,z,q;
>
> a= "<!-- j html output a --><!-- j js a --><!-- ";
>
>
> z= " --><!-- j js z --><!-- j html output z -->";
>
> while(0!=s.length)
>
> {
>
> i= s.indexOf(a);
>
> if(-1!=i)
>
> {
>
> i+= a.length;
>
> j= s.indexOf(z);
>
> q= s.substring(i,j);
>
> if(ajax||';'==q.charAt(0))
>
> try{eval(q);}catch(e){alert(e+"\n"+q);}
>
> s= s.substring(j+z.length);
>
> }
>
> else
>
> s= "";
>
> }
>
> }
>
> // function ev_roll_click(){jsubmit();} // submit form - calls J ev_roll_click
>
> var canvas = $("#myCanvas");
>
> var context = canvas.get(0).getContext("2d");
>
> context.fillRect(40, 40, 100, 100);
>
> </script>
>
> </head>
>
> <body onload="jevload();" onunload="jevunload();"
> onfocus="jevfocus();"><form id="j" name="j" method="post"
> action="test2"><input type="hidden" name="jdo" value=""><input
> type="hidden" name="jlocale" value="test2"><input type="hidden"
> name="jid" va...
>
> </html>
>
>
>
> **********longish session in jijx above*********
>
>
>
> On Sat, Sep 14, 2013 at 6:49 AM, Brian Schott <[email protected]>wrote:
>
> > Instead of using gtk I used unix's console and entered `nano test2.ijs`
> > as shown next. What is not shown is that I merely copied your text for
> > `test2.ijs` directly into nano.
> >
> > server:~ brian$ cd /Users/brian/j64-701-user
> > server:j64-701-user brian$ nano test2.ijs
> >
> > What seemed to fail, was the following line, but it was not a failure,
> > just a misplaced command.
> >
> > http://127.0.0.1:65001/test2
> >
> > Instead of being entered in the unix console, the command needed to be
> > entered in the browser as a URL, and only after entering the following in
> > the browser as a URL.
> >
> > http://127.0.0.1:65001/jijs?mid=open&path=~User/test2.ijs#
> >
> > An alternative to entering the above line in the URL field of the browser
> > is to select `jfile` from the leftmost menu of the jijx window of JHS and
> > then (double-?) clicking on the file `test2.ijs` on that page.
> >
> > But the key step then is to `run` the selected file using the `action`
> > menu or as a keystroke shortcut entering Esc-r.
> >
> > Then, opening a new tab in the browser and entering the link below (and
> > above), produces the Hello World web page, with the tab titled `hello` . My
> > browser even produces the blue J.
> >
> > http://127.0.0.1:65001/test2
> >
> > Yes! Thank you Bjorn.
> >
> > Next I will attempt to produce a canvas rendered rectangle.
> >
> >
> >
> >
> --
> (B=)
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
--
regards,
====================================================
GPG key 1024D/4434BAB3 2008-08-24
gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3
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