使用按钮作为切换按钮来更改文本并将一个变量替换为另一个变量

Question

I am trying to use the button to change from fahrenheit to celcius and vice versa. I tried to manage to change the text on the button and F/C words next to temperature but the equation $("#temp").text() === currentTempInCelsius always return false

 $(document).ready(function(){ $("#changerToC").click(function () { var fTemp = currentTempInCelsius * 9 / 5 + 32; $("#temp").text() === currentTempInCelsius ? $("#temp").text(fTemp) : $("#temp").text(currentTempInCelsius); $("#changerToC").text() ==="Change to Celcius" ? $("#changerToC").text("Change to Fahrenheit") : $("#changerToC").text("Change to Celcius"); $("#tempunit").text() === "C" ? $("#tempunit").text('F') : $("#tempunit").text('C'); }) }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div class="container"> <h1 class="title"> Free C<i class="fa fa-mixcloud"></i>de Camp <br> Weather App </h1> <h2 id="city"></h2> <h2 id="country"></h2> <br><br> <h2 id="temp"></h2> <h2 id="tempunit"></h2> <br><br> <h2 id="desc"></h2> <i id="weather-icon" class="fa"></i> <br> <button id="changerToC" class="btn btn-primary">Change to Fahrenheit</button> </div> 

Answer 1

像这样将===更改为== ：

     $("#temp").text() == currentTempInCelsius ? $("#temp").text(fTemp) : $("#temp").text(currentTempInCelsius);