How do I show a conditional image based on variable?
1
I am trying to show a different image depending on the outcome of my JS app.
My HTML + JS looks as follows now.
if (c == 2) {
document.getElementById('result').innerHTML = num + ' is a Prime number';
var imageshown = "OptimusPrime.gif"
}else{
document.getElementById('result').innerHTML = num + ' is NOT a Prime number';
var imageshown = "Megatron.gif"
}
}
</script>
<div class="container">
<form id="contact" method="post">
<h3>Prime-O-Tron</h3>
<h4>Please fill in a number in the field below and press "Calculate" to see if it is a prime number or not.</h4>
Please enter a number:
<input type="number" id="num" name="num" min="0" />
<input type="button" value="Find Prime Number" onclick="findPrime()" name="find" />
<div style="margin-top: 10px;" id="result"></div>
<img src= imageshown>
But it is not displaying any image, no matter if the outcome is from the if or the else.
How would I embed a different image based on the outcome of my JS ?
javascript html
asked Nov 12 '18 at 12:15
Ceesiebird
62111
add a comment |
1
I am trying to show a different image depending on the outcome of my JS app.
My HTML + JS looks as follows now.
if (c == 2) {
document.getElementById('result').innerHTML = num + ' is a Prime number';
var imageshown = "OptimusPrime.gif"
}else{
document.getElementById('result').innerHTML = num + ' is NOT a Prime number';
var imageshown = "Megatron.gif"
}
}
</script>
<div class="container">
<form id="contact" method="post">
<h3>Prime-O-Tron</h3>
<h4>Please fill in a number in the field below and press "Calculate" to see if it is a prime number or not.</h4>
Please enter a number:
<input type="number" id="num" name="num" min="0" />
<input type="button" value="Find Prime Number" onclick="findPrime()" name="find" />
<div style="margin-top: 10px;" id="result"></div>
<img src= imageshown>
But it is not displaying any image, no matter if the outcome is from the if or the else.
How would I embed a different image based on the outcome of my JS ?
javascript html
asked Nov 12 '18 at 12:15
Ceesiebird
62111
Try placing that particular script after thehtmlwithresultid. Let me know if that helps.
– AkshayM
Nov 12 '18 at 12:18
use show hide technique in js. you can easily track any html element and show or hide it. a little bit googling will help.
– Tazbir Bhuiyan
Nov 12 '18 at 12:18
you can not use local variable like that. give id to img tag and set source in javascript. that works fine.
– Sindhoor
Nov 12 '18 at 12:25
add a comment |
1
1
1
I am trying to show a different image depending on the outcome of my JS app.
My HTML + JS looks as follows now.
if (c == 2) {
document.getElementById('result').innerHTML = num + ' is a Prime number';
var imageshown = "OptimusPrime.gif"
}else{
document.getElementById('result').innerHTML = num + ' is NOT a Prime number';
var imageshown = "Megatron.gif"
}
}
</script>
<div class="container">
<form id="contact" method="post">
<h3>Prime-O-Tron</h3>
<h4>Please fill in a number in the field below and press "Calculate" to see if it is a prime number or not.</h4>
Please enter a number:
<input type="number" id="num" name="num" min="0" />
<input type="button" value="Find Prime Number" onclick="findPrime()" name="find" />
<div style="margin-top: 10px;" id="result"></div>
<img src= imageshown>
But it is not displaying any image, no matter if the outcome is from the if or the else.
How would I embed a different image based on the outcome of my JS ?
javascript html
asked Nov 12 '18 at 12:15
Ceesiebird
62111
I am trying to show a different image depending on the outcome of my JS app.
My HTML + JS looks as follows now.
if (c == 2) {
document.getElementById('result').innerHTML = num + ' is a Prime number';
var imageshown = "OptimusPrime.gif"
}else{
document.getElementById('result').innerHTML = num + ' is NOT a Prime number';
var imageshown = "Megatron.gif"
}
}
</script>
<div class="container">
<form id="contact" method="post">
<h3>Prime-O-Tron</h3>
<h4>Please fill in a number in the field below and press "Calculate" to see if it is a prime number or not.</h4>
Please enter a number:
<input type="number" id="num" name="num" min="0" />
<input type="button" value="Find Prime Number" onclick="findPrime()" name="find" />
<div style="margin-top: 10px;" id="result"></div>
<img src= imageshown>
But it is not displaying any image, no matter if the outcome is from the if or the else.
How would I embed a different image based on the outcome of my JS ?
javascript html
javascript html
asked Nov 12 '18 at 12:15
Ceesiebird
62111
asked Nov 12 '18 at 12:15
Ceesiebird
62111
asked Nov 12 '18 at 12:15
Ceesiebird
62111
asked Nov 12 '18 at 12:15
Ceesiebird
62111
asked Nov 12 '18 at 12:15
Ceesiebird
62111
62111
Try placing that particular script after thehtmlwithresultid. Let me know if that helps.
– AkshayM
Nov 12 '18 at 12:18
use show hide technique in js. you can easily track any html element and show or hide it. a little bit googling will help.
– Tazbir Bhuiyan
Nov 12 '18 at 12:18
you can not use local variable like that. give id to img tag and set source in javascript. that works fine.
– Sindhoor
Nov 12 '18 at 12:25
add a comment |
Try placing that particular script after thehtmlwithresultid. Let me know if that helps.
– AkshayM
Nov 12 '18 at 12:18
use show hide technique in js. you can easily track any html element and show or hide it. a little bit googling will help.
– Tazbir Bhuiyan
Nov 12 '18 at 12:18
you can not use local variable like that. give id to img tag and set source in javascript. that works fine.
– Sindhoor
Nov 12 '18 at 12:25
Try placing that particular script after the
html with result id. Let me know if that helps.– AkshayM
Nov 12 '18 at 12:18
Try placing that particular script after the
html with result id. Let me know if that helps.– AkshayM
Nov 12 '18 at 12:18
use show hide technique in js. you can easily track any html element and show or hide it. a little bit googling will help.
– Tazbir Bhuiyan
Nov 12 '18 at 12:18
use show hide technique in js. you can easily track any html element and show or hide it. a little bit googling will help.
– Tazbir Bhuiyan
Nov 12 '18 at 12:18
you can not use local variable like that. give id to img tag and set source in javascript. that works fine.
– Sindhoor
Nov 12 '18 at 12:25
you can not use local variable like that. give id to img tag and set source in javascript. that works fine.
– Sindhoor
Nov 12 '18 at 12:25
add a comment |
2 Answers
2
active
oldest
votes
1
You can change the src instead of updating the variable's value. Also you might simplify like this:
if (c == 2) {
msg = num + ' is a Prime number';
imageshown = "OptimusPrime.gif"
} else {
msg = num + ' is NOT a Prime number';
imageshown = "Megatron.gif"
}
var result = document.getElementById('result');
var img = result.nextElementSibling;
result.textContent = msg;
img.src = imageshown;
} // <--function closing
answered Nov 12 '18 at 12:24
Jai
63.6k95479
Works like a dream! Thank you for your detailed response.
– Ceesiebird
Nov 12 '18 at 12:33
@Ceesiebird Glad this helped you.
– Jai
Nov 12 '18 at 12:35
add a comment |
-1
try this,
html
<img id='img' src= imageshown>
javascript
if (c == 2) {
document.getElementById('result').innerHTML = num + ' is a Prime number';
var imageshown = "OptimusPrime.gif"
} else {
document.getElementById('result').innerHTML = num + ' is NOT a Prime number';
var imageshown = "Megatron.gif"
}
document.getElementById('img').src = imageshown;
answered Nov 12 '18 at 12:27
Ian Zhong
544112
where are you getting result element? which is not there in your html.
– Sindhoor
Nov 12 '18 at 12:31
@Sindhoor it's ademo, you can just ignoreresultelement, Ceesiebird reference this element in the Question.
– Ian Zhong
Nov 12 '18 at 12:38
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
You can change the src instead of updating the variable's value. Also you might simplify like this:
if (c == 2) {
msg = num + ' is a Prime number';
imageshown = "OptimusPrime.gif"
} else {
msg = num + ' is NOT a Prime number';
imageshown = "Megatron.gif"
}
var result = document.getElementById('result');
var img = result.nextElementSibling;
result.textContent = msg;
img.src = imageshown;
} // <--function closing
answered Nov 12 '18 at 12:24
Jai
63.6k95479
Works like a dream! Thank you for your detailed response.
– Ceesiebird
Nov 12 '18 at 12:33
@Ceesiebird Glad this helped you.
– Jai
Nov 12 '18 at 12:35
add a comment |
1
You can change the src instead of updating the variable's value. Also you might simplify like this:
if (c == 2) {
msg = num + ' is a Prime number';
imageshown = "OptimusPrime.gif"
} else {
msg = num + ' is NOT a Prime number';
imageshown = "Megatron.gif"
}
var result = document.getElementById('result');
var img = result.nextElementSibling;
result.textContent = msg;
img.src = imageshown;
} // <--function closing
answered Nov 12 '18 at 12:24
Jai
63.6k95479
Works like a dream! Thank you for your detailed response.
– Ceesiebird
Nov 12 '18 at 12:33
@Ceesiebird Glad this helped you.
– Jai
Nov 12 '18 at 12:35
add a comment |
1
1
1
You can change the src instead of updating the variable's value. Also you might simplify like this:
if (c == 2) {
msg = num + ' is a Prime number';
imageshown = "OptimusPrime.gif"
} else {
msg = num + ' is NOT a Prime number';
imageshown = "Megatron.gif"
}
var result = document.getElementById('result');
var img = result.nextElementSibling;
result.textContent = msg;
img.src = imageshown;
} // <--function closing
answered Nov 12 '18 at 12:24
Jai
63.6k95479
You can change the src instead of updating the variable's value. Also you might simplify like this:
if (c == 2) {
msg = num + ' is a Prime number';
imageshown = "OptimusPrime.gif"
} else {
msg = num + ' is NOT a Prime number';
imageshown = "Megatron.gif"
}
var result = document.getElementById('result');
var img = result.nextElementSibling;
result.textContent = msg;
img.src = imageshown;
} // <--function closing
answered Nov 12 '18 at 12:24
Jai
63.6k95479
answered Nov 12 '18 at 12:24
Jai
63.6k95479
answered Nov 12 '18 at 12:24
Jai
63.6k95479
answered Nov 12 '18 at 12:24
Jai
63.6k95479
63.6k95479
Works like a dream! Thank you for your detailed response.
– Ceesiebird
Nov 12 '18 at 12:33
@Ceesiebird Glad this helped you.
– Jai
Nov 12 '18 at 12:35
add a comment |
Works like a dream! Thank you for your detailed response.
– Ceesiebird
Nov 12 '18 at 12:33
@Ceesiebird Glad this helped you.
– Jai
Nov 12 '18 at 12:35
Works like a dream! Thank you for your detailed response.
– Ceesiebird
Nov 12 '18 at 12:33
Works like a dream! Thank you for your detailed response.
– Ceesiebird
Nov 12 '18 at 12:33
@Ceesiebird Glad this helped you.
– Jai
Nov 12 '18 at 12:35
@Ceesiebird Glad this helped you.
– Jai
Nov 12 '18 at 12:35
add a comment |
-1
try this,
html
<img id='img' src= imageshown>
javascript
if (c == 2) {
document.getElementById('result').innerHTML = num + ' is a Prime number';
var imageshown = "OptimusPrime.gif"
} else {
document.getElementById('result').innerHTML = num + ' is NOT a Prime number';
var imageshown = "Megatron.gif"
}
document.getElementById('img').src = imageshown;
answered Nov 12 '18 at 12:27
Ian Zhong
544112
where are you getting result element? which is not there in your html.
– Sindhoor
Nov 12 '18 at 12:31
@Sindhoor it's ademo, you can just ignoreresultelement, Ceesiebird reference this element in the Question.
– Ian Zhong
Nov 12 '18 at 12:38
add a comment |
-1
try this,
html
<img id='img' src= imageshown>
javascript
if (c == 2) {
document.getElementById('result').innerHTML = num + ' is a Prime number';
var imageshown = "OptimusPrime.gif"
} else {
document.getElementById('result').innerHTML = num + ' is NOT a Prime number';
var imageshown = "Megatron.gif"
}
document.getElementById('img').src = imageshown;
answered Nov 12 '18 at 12:27
Ian Zhong
544112
where are you getting result element? which is not there in your html.
– Sindhoor
Nov 12 '18 at 12:31
@Sindhoor it's ademo, you can just ignoreresultelement, Ceesiebird reference this element in the Question.
– Ian Zhong
Nov 12 '18 at 12:38
add a comment |
-1
-1
-1
try this,
html
<img id='img' src= imageshown>
javascript
if (c == 2) {
document.getElementById('result').innerHTML = num + ' is a Prime number';
var imageshown = "OptimusPrime.gif"
} else {
document.getElementById('result').innerHTML = num + ' is NOT a Prime number';
var imageshown = "Megatron.gif"
}
document.getElementById('img').src = imageshown;
answered Nov 12 '18 at 12:27
Ian Zhong
544112
try this,
html
<img id='img' src= imageshown>
javascript
if (c == 2) {
document.getElementById('result').innerHTML = num + ' is a Prime number';
var imageshown = "OptimusPrime.gif"
} else {
document.getElementById('result').innerHTML = num + ' is NOT a Prime number';
var imageshown = "Megatron.gif"
}
document.getElementById('img').src = imageshown;
answered Nov 12 '18 at 12:27
Ian Zhong
544112
answered Nov 12 '18 at 12:27
Ian Zhong
544112
answered Nov 12 '18 at 12:27
Ian Zhong
544112
answered Nov 12 '18 at 12:27
Ian Zhong
544112
544112
where are you getting result element? which is not there in your html.
– Sindhoor
Nov 12 '18 at 12:31
@Sindhoor it's ademo, you can just ignoreresultelement, Ceesiebird reference this element in the Question.
– Ian Zhong
Nov 12 '18 at 12:38
add a comment |
where are you getting result element? which is not there in your html.
– Sindhoor
Nov 12 '18 at 12:31
@Sindhoor it's ademo, you can just ignoreresultelement, Ceesiebird reference this element in the Question.
– Ian Zhong
Nov 12 '18 at 12:38
where are you getting result element? which is not there in your html.
– Sindhoor
Nov 12 '18 at 12:31
where are you getting result element? which is not there in your html.
– Sindhoor
Nov 12 '18 at 12:31
@Sindhoor it's a
demo, you can just ignore result element, Ceesiebird reference this element in the Question.– Ian Zhong
Nov 12 '18 at 12:38
@Sindhoor it's a
demo, you can just ignore result element, Ceesiebird reference this element in the Question.– Ian Zhong
Nov 12 '18 at 12:38
add a comment |
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Try placing that particular script after the
htmlwithresultid. Let me know if that helps.– AkshayM
Nov 12 '18 at 12:18
use show hide technique in js. you can easily track any html element and show or hide it. a little bit googling will help.
– Tazbir Bhuiyan
Nov 12 '18 at 12:18
you can not use local variable like that. give id to img tag and set source in javascript. that works fine.
– Sindhoor
Nov 12 '18 at 12:25