This delete the onclick string in the html dombut it's works same, auto create event listener with the code Example

delete-on-click-in-dom.js

window.ClearDOM = {
  clearOnClick: function(element){
    var code_block = $(element).attr('onclick')
    $(element).on('click', function(event){
      eval( code_block )
    })
    $(element).attr('onclick', '')
  },
  run: function(selector){
    $('*[onclick]').toArray().forEach( (element) => ClearDOM.clearOnClick(element) )
  }
}

ClearDOM.run()

Example:
<a onclick="console.log('its bad write here?')" >Example</a>
ClearDom.run()
Result
Example