[javascript] Get list of all input objects using JavaScript, without accessing a form object

I need to get all the input objects and manipulate the onclick param.

The following does the job for <a> links. Looking for something like this for input tags.

for (var ls = document.links, numLinks = ls.length, i=0; i<numLinks; i++){
  var link = unescape(ls[i].href);
  link = link.replace(/\\'/ig,"#");
  if(ls[i].href.indexOf("javascript:") == -1)
  {
    ls[i].href = "javascript:LoadExtern(\\""+link+"\\",\\"ControlPanelContent\\",true,true);";
  }
}

var inputs = document.getElementsByTagName('input');
for (var i = 0; i < inputs.length; ++i) {
  // ...
}

querySelectorAll returns a NodeList which has its own forEach method:

document.querySelectorAll('input').forEach( input => {
  // ...
});

getElementsByTagName now returns an HTMLCollection instead of a NodeList. So you would first need to convert it to an array to have access to methods like map and forEach:

Array.from(document.getElementsByTagName('input')).forEach( input => {
  // ...
});