How do I compare two variables containing strings in JavaScript?

javascript

Solution

`===` is not necessary. You know both values are strings so you dont need to compare types.

function do_check()
{
  var str1 = $("#textbox1").val();
  var str2 = $("#textbox2").val();

  if (str1 == str2)
  {
    $(":text").removeClass("incorrect");
    alert("equal");
  }
  else
  {
    $(":text").addClass("incorrect");
    alert("not equal");
  }
}

.incorrect
{
  background: #ff8888;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<input id="textbox1" type="text">
<input id="textbox2" type="text">

<button onclick="do_check()">check</button>

Problem

I want compare two variables, that are strings, but I am getting an error. ``` <script> var to_check=$(this).val(); var cur_string=$("#0").text(); var to_chk = "that"; var cur_str= "that"; if(to_chk==cur_str){ alert("both are equal"); $("#0").attr("class","correct"); } else { alert("both are not equal"); $("#0").attr("class","incorrect"); } </script> ``` Is something wrong with my if statement?

Original source