Editing HTML DOM using Javascript

Question

My assignment is to modify the box provided by the instructor using Javascript. However, none of the changes I make on my Javascript file seem to work. I have named my HTML file index.html and Javascript file javascript.js. Here is what I have:

document.getElementById("button1").addEventListener("click", function(){
    document.getElementById("box").style.height = "250px";

        });

document.getElementById("button2").addEventListener("click", function(){
    document.getElementById("box").style.color:orange

        });

 document.getElementById("button3").addEventListener("click", function(){
    document.getElementById("box").style.opacity = 0;

        });
document.getElementById("button4").addEventListener("click", function(){
    document.getElementById("box").style.height = "150px"

<!DOCTYPE html>
<html>

<head>
  <title>Jiggle Into JavaScript</title>
  <script type="text/javascript" src="javascript.js">
  </script>
</head>

<body>

  <p>Press the buttons to change the box!</p>

  <div id="box" style="height:150px; width:150px; background-color:orange; margin:25px"></div>

  <button id="button1">Grow</button>
  <button id="button2">Blue</button>
  <button id="button3">Fade</button>
  <button id="button4">Reset</button>


</body>

</html>

The reset button should do that. But I still have to work on that. I suspect that all I have to do is add .addEventlistener and include all of the original styles, including opacity. — Moises
– Moises, Commented Aug 12, 2020 at 3:13

shreyasm-dev · Accepted Answer · 2020-08-11 01:10:09Z

3

The problem is here: document.getElementById("box").style.color:orange . It should be document.getElementById("box").style.color = "orange";.

document.getElementById("button1").addEventListener("click", function(){
    document.getElementById("box").style.height = "250px";

});

document.getElementById("button2").addEventListener("click", function(){
    document.getElementById("box").style.color = "orange";

});

 document.getElementById("button3").addEventListener("click", function(){
    document.getElementById("box").style.opacity = 0;

});

document.getElementById("button4").addEventListener("click", function(){
    document.getElementById("box").style.height = "150px"
});

<!DOCTYPE html>
<html>

<head>
  <title>Jiggle Into JavaScript</title>
  <script type="text/javascript" src="javascript.js">
  </script>
</head>

<body>

  <p>Press the buttons to change the box!</p>

  <div id="box" style="height:150px; width:150px; background-color:orange; margin:25px"></div>

  <button id="button1">Grow</button>
  <button id="button2">Blue</button>
  <button id="button3">Fade</button>
  <button id="button4">Reset</button>


</body>

</html>

answered Aug 11, 2020 at 1:10

shreyasm-dev

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1 Comment

Dexterians Over a year ago

Why is the button called BLUE making it orange? I feel like the instructor provided the JS and is testing the students.

coding_makes_no_sense · Accepted Answer · 2020-08-11 01:12:56Z

0

Well, when I run the code snippet, stacks "mini google inspect" shows that the ":" in your javascript should not be there!

So your code should be

document.getElementById("button2").addEventListener("click", function(){
    document.getElementById("box").style.color = "orange";

        });

instead of what you currently have.

answered Aug 11, 2020 at 1:12

coding_makes_no_sense

357 bronze badges

Comments

MikeE · Accepted Answer · 2020-08-11 01:35:47Z

0

document.getElementById("button1").addEventListener("click", function(){
    document.getElementById("box").style.height = "250px";

        });

document.getElementById("button2").addEventListener("click", function(){
    document.getElementById("box").style.background = "blue";

        });

 document.getElementById("button3").addEventListener("click", function(){
    document.getElementById("box").style.opacity = 0;

        });
document.getElementById("button4").addEventListener("click", function(){
    document.getElementById("box").style.height = "150px";
  });

<body>

  <p>Press the buttons to change the box!</p>

  <div id="box" style="height:150px; width:150px; background-color:orange; margin:25px;opacity: 1;"></div>

  <button id="button1">Grow</button>
  <button id="button2">Blue</button>
  <button id="button3">Fade</button>
  <button id="button4">Reset</button>


</body>

Check your syntax :)

answered Aug 11, 2020 at 1:35

MikeE

13 bronze badges

2 Comments

Moises Over a year ago

I see that running the code snippet on here works. But when I try to run on my end by using the default browser, it doesnt work. Any suggestions?

MikeE Over a year ago

@Moises, you should check your syntax of document.getElementById("box").style.color:orange to document.getElementById("box").style.color = "orange"; and always check your close parenthesis or close brackets on your last line of your provided code });

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