javascript - How can I prevent a user using inspect element to enable a disabled element? -

i have button follows:

<input type="submit" class="button" value="foobar" name="foobar" id="foobar" disabled="disabled"> 

i enabling button when parameters met. test whether secure, pressed f12 (or right click -> inspect element) , edited out text disabled="disabled". doing overrides code , scary. how can prevent changing in manner?

i using php , jquery in page , using latter enable or disable button. have checked jquery click function , not executes, shows button not disabled. alert below reads disabled: false

$("#foobar").click(function(){     alert('disabled: ' + $(this).is('[disabled=disabled]'));     }) 

so how can prevent user changing button disabled state , overriding logic?

you can't stop people using dev tools.

you can try couple of tricks disable right clicking (like 1 below) stop number of people solution problem use html , http properly.

$(document).bind("contextmenu",function(e) {     e.preventdefault(); });