How to change Label Value using javascript -

I want to change the label label from '0' to the label below 'Thank you', at the checkbox click event.

  & lt; Input type = "hidden" name = "label 206451" value = "0" /> & Lt; == "txt206451" class = "swatch_text" for label & gt; Chestnut leather & lt; / Label & gt; & Lt; Input type = "checkbox" name = "field 206451" class = "swatch_check" id = "txt206451" value = "selected" />  

Javascript is as follows.

  var cb = document.getElementById ('field206451'); Var label = document.getElementById ('label206451'); Cb.addEventListener ('click', function (evt) {if (cb.checked) {label.value = 'thanks';} and {label.value = '0';}}, wrong);  

But is this not working any thoughts?

You are taking the name in document. GetElementById () should be your cb txt206451 ( id attribute ) is not a name attribute.

or

You can get it by

  var cb = document.getElementsByName ('field206451') [0]; // first one  

OR

  var cb = document.getElementById ('txt206451');  

and to set the value in hidden usage as follows

  var cb = document.getElementById ('txt206451'); Var label = document.getElementsByName ('label206451') [0]; // Get the first index console.log (label); Cb.addEventListener ('change', function (evt) {// use change here.) If it (ne.sectioned) {label.value = 'thanks'} and {label.value = '0'}}, is not wrong .;