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| From | Thomas 'PointedEars' Lahn <PointedEars@web.de> |
| Newsgroups | comp.lang.javascript |
| Subject | Re: input type="color" |
| Supersedes | <5321457.DvuYhMxLoT@PointedEars.de> |
| Date | Thu, 28 Nov 2019 18:52:18 +0100 |
| Organization | PointedEars Software (PES) |
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| Xref | csiph.com comp.lang.javascript:37890 |
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Andrew Poulos wrote:
> On 24/11/2019 8:12 pm, Evertjan. wrote:
>> <style>
>> #showColour {width:120px;height:50px;border:black 2px solid;}
>> </style>
>> <div id='showColour'></div>
>> <div id='showColourString'></div>
>> <br><br>
>> <input id='getColour' value='#'>
>> <script>
>> const getColour = document.querySelector('#getColour');
>> const showColour = document.querySelector('#showColour');
>> const showColourString = document.querySelector('#showColourString');
This is much more efficient when written as follows:
const getColour = document.getElementById('getColour');
const showColour = document.getElementById('showColour');
const showColourString = document.getElementById('showColourString');
See also: <https://gist.github.com/chitsaou/3066411>
Also, using these variable identifiers and therefore the IDs is unwise at
best. Those (verb + object) are identifiers that should only be used for
*functions* and *methods*.
>> getColour.addEventListener("keyup", function() {
>> if (this.value.length == 4 || this.value.length == 7) {
>> showColour.style.backgroundColor = this.value;
>> showColourString.innerHTML = this.value;
showColourString.textContent = this.value;
But see above.
--
PointedEars
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Re: input type="color" Andrew Poulos <ap_prog@hotmail.com> - 2019-11-25 07:12 +1100 Re: input type="color" Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2019-11-28 18:52 +0100
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