javascript - How to save this in a JS variable?

Question

I would like to know how to save the output of this into a "var a="

navigator.plugins.refresh(false);

var numPlugins = navigator.plugins.length;


for (var i = 0; i < numPlugins; i++){
  var plugin = navigator.plugins[i];

  if (plugin) {
    document.write(plugin.name + plugin.description + plugin.filename)
  }
}

Answer 1

Declare a outside of the loop and define it as an empty string, then append results to it as you go:

navigator.plugins.refresh(false);

var numPlugins = navigator.plugins.length;
var a = '';

for (var i = 0; i < numPlugins; i++){
  var plugin = navigator.plugins[i];

  if (plugin) {
    a += plugin.name + plugin.description + plugin.filename;
  }
}

You may want to use an array of strings though, since you could have many plugins:

navigator.plugins.refresh(false);

var numPlugins = navigator.plugins.length;
var a = [];

for (var i = 0; i < numPlugins; i++){
  var plugin = navigator.plugins[i];

  if (plugin) {
    a.push(plugin.name + plugin.description + plugin.filename);
  }
}

EDIT If you need to hash a into something:

var hash = yourMd5Function(a);

Or for the second example:

var b = a.join(','); // "plugin1,plugin2,..." for example
var hash = yourMd5Function(b);