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I have the following question because I haven't found anything on the internet. I have created several selects with HTML. The select has the optiions yes / no. The first select checks whether the topic is relevant, if it is not relevant, then the remaining selects for the topic should disappear. I then send the evaluation of the selects with a button (evaluation with php), but would like to have the behavior, directly between the change from yes to no. I am open to all possibilities, be it CSS, HTML or JavaScript. In addition, all of my Selects are in a "div"
On your checkbox, you can addonchange="changeChk()" like this:
<input type="checkbox" id="checkId" onchange="changeChk()">
then in Javascript you can make disappear/appear other checkboxes in this function:
function changeChk() {
if (document.getElementById('checkId').checked) {
document.getElementById("otherchk").classList.remove("hidden");
} else {
document.getElementById("otherchk").classList.add("hidden");
}
with a bit of css:
.hidden {
visibility: hidden;
}
Example where I surround the checkbox with a span to make the label disappear as well:
function changeChk() {
if (!document.getElementById('checkId').checked) {
document.getElementById("spanDisappear").classList.remove("hidden");
} else {
document.getElementById("spanDisappear").classList.add("hidden");
}
}.hidden {
visibility: hidden;
}<input type="checkbox" id="checkId" onchange="changeChk()"> this will always be here
<span id="spanDisappear"><input type="checkbox" id="otherchk"> this will disappear</span>Our community is visited by hundreds of web development professionals every day. Ask your question and get a quick answer for free.
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PHP (from the English Hypertext Preprocessor - hypertext preprocessor) is a scripting programming language for developing web applications. Supported by most hosting providers, it is one of the most popular tools for creating dynamic websites.
The PHP scripting language has gained wide popularity due to its processing speed, simplicity, cross-platform, functionality and distribution of source codes under its own license.
https://www.php.net/
JavaScript is a multi-paradigm language that supports event-driven, functional, and mandatory (including object-oriented and prototype-based) programming types. Originally JavaScript was only used on the client side. JavaScript is now still used as a server-side programming language. To summarize, we can say that JavaScript is the language of the Internet.
https://www.javascript.com/
CSS (Cascading Style Sheets) is a formal language for describing the appearance of a document written using a markup language.
It is mainly used as a means of describing, decorating the appearance of web pages written using HTML and XHTML markup languages, but can also be applied to any XML documents, such as SVG or XUL.
https://www.w3.org/TR/CSS/#css
HTML (English "hyper text markup language" - hypertext markup language) is a special markup language that is used to create sites on the Internet.
Browsers understand html perfectly and can interpret it in an understandable way. In general, any page on the site is html-code, which the browser translates into a user-friendly form. By the way, the code of any page is available to everyone.
https://www.w3.org/html/
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