问如果语句忽略内部变量，则单击事件

EN

<button type="button" class="one">Press</button>
<button type="button" class="two">section 2</button>
<button type="button" class="three">section 3</button>
<div class="textbox">
 <h1>hi</h1>
 <p>text</p>
</div>

var y = '.textbox p'
var n = 20

$('.one').click(function() {
  if (n=1) {
    $(y).html("hi hi <br> hi <br><br>");
    $('.textbox h1').html("titulo");
    var a=0
  }
});

$('.two').click(function() {
  if (n=1) {
    $('.textbox p').html("hey <br> hi <br><br>");
    $('.textbox h1').html("sup bro");
    var a=0
  }
  else {
    $('.textbox p').html("variable is not 1");
    $('.textbox h1').html("another");
    var a=0
  }
});