fix typo; throw exception on error

client/servicedock.js

@@ -1,11 +1,10 @@
 var socket = io.connect()
 var docker = new Docker(socket, error, sigstack)
 var parameters = docker.graphics.parameters
-console.log(localStorage)
 
-function error(msg, data) {
+function error(e) {
   $('#status').removeClass().addClass('error')
-  $('#error').html('<h1>Error</h1><p>'+(new Date()).toLocaleString()+'</p><p>'+msg+'</p><pre>'+data+'</pre>').show()
+  $('#error').html('<h1>Error</h1><p>'+(new Date()).toLocaleString()+'</p><p>'+e.msg+'</p><pre>'+e.data+'</pre>').show()
 }
 
 function sigstack() {
@@ -13,31 +12,33 @@ function sigstack() {
   $('#clock').text((new Date()).toLocaleString())
   $('#status').removeClass().addClass('wait')
   var dot = docker.graphics.stack(parameters)
-  var svg = docker.graphics.viz(dot, error)
-  $('#stacks').html(svg)
-  $('#clock').text((new Date()).toLocaleString())
-  $('#status').removeClass().addClass('success')
-  $('a#svg').attr('href', 'data:image/svg;base64,'+btoa(svg))
-                  .attr('target', '_blank')
-                  .attr('download', window.location.hostname+'.svg')
   $('a#dot').attr('href', 'data:text/vnd.graphviz;base64,'+btoa(dot))
                   .attr('target', '_blank')
                   .attr('download', window.location.hostname+'.dot')
-
+  try {
+    $('#clock').text((new Date()).toLocaleString())
+    var svg = docker.graphics.viz(dot)
+    $('#stacks').html(svg)
+    $('#status').removeClass().addClass('success')
+    $('a#svg').attr('href', 'data:image/svg;base64,'+btoa(svg))
+                    .attr('target', '_blank')
+                    .attr('download', window.location.hostname+'.svg')
+  } catch (e) {
+    error(e)
+  }
+  $('#clock').text((new Date()).toLocaleString())
 }
 
 function setParameters() {
   localStorage.rankdir = (++localStorage.rankdir)%setParameters.rankdirs.length
   parameters.rankdir = setParameters.rankdirs[localStorage.rankdir]
   $('#orientation').removeClass().addClass(parameters.rankdir.toLowerCase())
-  console.log(localStorage.rankdir)
 }
 setParameters.rankdirs = ['LR', 'TB', 'RL', 'BT']
 if (!localStorage.rankdir)
   localStorage.rankdir = -1
 else
   --localStorage.rankdir
-console.log(localStorage.rankdir)
 
 function init() {
   setParameters()