Get list of all input objects using JavaScript without accessing a form object

Question

I need to get all the input objects and manipulate the onclick param   The following does the job for  lt a gt  links  Looking for something like this for input tags   for  var ls   document links  numLinks   ls length  i 0  i lt 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

User · Answer

var inputs   document getElementsByTagName  input    for  var i   0  i  lt  inputs length    i

User · Answer

See update at end of answer    You can get a NodeList of all of the input elements via getElementsByTagName  DOM specification  MDC  MSDN   then simply loop through it   var inputs  index   inputs   document getElementsByTagName  input    for  index   0  index  lt  inputs length    index           deal with inputs index  element      There I ve used it on the document  which will search the entire document  It also exists on individual elements  DOM specification   allowing you to search only their descendants rather than the whole document  e g    var container  inputs  index      Get the container element container   document getElementById  container        Find its child  input  elements inputs   container getElementsByTagName  input    for  index   0  index  lt  inputs length    index           deal with inputs index  element         but you ve said you don t want to use the parent form  so the first example is more applicable to your question  the second is just there for completeness  in case someone else finding this answer needs to know      Update  getElementsByTagName is an absolutely fine way to do the above  but what if you want to do something slightly more complicated  like just finding all of the checkboxes instead of all of the input elements   That s where the useful querySelectorAll comes in  It lets us get a list of elements that match any CSS selector we want  So for our checkboxes example   var checkboxes   document querySelectorAll  input type checkbox       You can also use it at the element level  For instance  if we have a div element in our element variable  we can find all of the spans with the class foo that are inside that div like this   var fooSpans   element querySelectorAll  span foo      querySelectorAll and its cousin querySelector  which just finds the first matching element instead of giving you a list  are supported by all modern browsers  and also IE8

User · Answer

querySelectorAll returns a NodeList which has its own forEach method   document querySelectorAll  input   forEach  input   gt                   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   gt

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

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