Mixing
how to restyle element in #shadow-root ( shadow DOM )
the following code is a view from chrome dev tools
<textarea>
#shadow-root (user-agent)
<p> This I want to restyle </p>
<textarea>
what CSS selector I have to use if I would like to restyle element in shadow DOM ?
thank you
html css3 shadow-dom
asked Nov 22 '18 at 12:44
Pavel FrantaPavel Franta
329214
add a comment |
the following code is a view from chrome dev tools
<textarea>
#shadow-root (user-agent)
<p> This I want to restyle </p>
<textarea>
what CSS selector I have to use if I would like to restyle element in shadow DOM ?
thank you
html css3 shadow-dom
asked Nov 22 '18 at 12:44
Pavel FrantaPavel Franta
329214
1
Get deep into that; gist.github.com/praveenpuglia/0832da687ed5a5d7a0907046c9ef1813, ...but answering your question it's impossible to style it with any selector.
– Jakub Chlebowicz
Nov 22 '18 at 12:47
2
You cannot access the content of a user-agent Shadow DOM. stackoverflow.com/a/38736220/4600982
– Supersharp
Nov 22 '18 at 13:44
@connexo :) actually in my case textarea has two divs, one for placeholder and second for the content itself. To my surprise, I could restyle placeholder directly from CSS with this ::placeholder, but still struggling with the content div restyling
– Pavel Franta
Nov 26 '18 at 9:41
@connexo I didn't customize anything, it is like it was, plain HTML element textarea. So it should be valid i guess :D
– Pavel Franta
Nov 26 '18 at 13:08
@connexo ? If I inspect plain, empty textarea in chrome dev tools, it contains at least empty <div></div> in shadow-root ... what exactly is unclear about that ? Question was how to restyle this div... if you dont know any useful answer so please don't waste your time with my question :)
– Pavel Franta
Nov 27 '18 at 15:06
add a comment |
the following code is a view from chrome dev tools
<textarea>
#shadow-root (user-agent)
<p> This I want to restyle </p>
<textarea>
what CSS selector I have to use if I would like to restyle element in shadow DOM ?
thank you
html css3 shadow-dom
asked Nov 22 '18 at 12:44
Pavel FrantaPavel Franta
329214
the following code is a view from chrome dev tools
<textarea>
#shadow-root (user-agent)
<p> This I want to restyle </p>
<textarea>
what CSS selector I have to use if I would like to restyle element in shadow DOM ?
thank you
html css3 shadow-dom
html css3 shadow-dom
asked Nov 22 '18 at 12:44
Pavel FrantaPavel Franta
329214
asked Nov 22 '18 at 12:44
Pavel FrantaPavel Franta
329214
asked Nov 22 '18 at 12:44
Pavel FrantaPavel Franta
329214
asked Nov 22 '18 at 12:44
Pavel FrantaPavel Franta
329214
asked Nov 22 '18 at 12:44
Pavel FrantaPavel Franta
329214
329214
1
Get deep into that; gist.github.com/praveenpuglia/0832da687ed5a5d7a0907046c9ef1813, ...but answering your question it's impossible to style it with any selector.
– Jakub Chlebowicz
Nov 22 '18 at 12:47
2
You cannot access the content of a user-agent Shadow DOM. stackoverflow.com/a/38736220/4600982
– Supersharp
Nov 22 '18 at 13:44
@connexo :) actually in my case textarea has two divs, one for placeholder and second for the content itself. To my surprise, I could restyle placeholder directly from CSS with this ::placeholder, but still struggling with the content div restyling
– Pavel Franta
Nov 26 '18 at 9:41
@connexo I didn't customize anything, it is like it was, plain HTML element textarea. So it should be valid i guess :D
– Pavel Franta
Nov 26 '18 at 13:08
@connexo ? If I inspect plain, empty textarea in chrome dev tools, it contains at least empty <div></div> in shadow-root ... what exactly is unclear about that ? Question was how to restyle this div... if you dont know any useful answer so please don't waste your time with my question :)
– Pavel Franta
Nov 27 '18 at 15:06
add a comment |
1
Get deep into that; gist.github.com/praveenpuglia/0832da687ed5a5d7a0907046c9ef1813, ...but answering your question it's impossible to style it with any selector.
– Jakub Chlebowicz
Nov 22 '18 at 12:47
2
You cannot access the content of a user-agent Shadow DOM. stackoverflow.com/a/38736220/4600982
– Supersharp
Nov 22 '18 at 13:44
@connexo :) actually in my case textarea has two divs, one for placeholder and second for the content itself. To my surprise, I could restyle placeholder directly from CSS with this ::placeholder, but still struggling with the content div restyling
– Pavel Franta
Nov 26 '18 at 9:41
@connexo I didn't customize anything, it is like it was, plain HTML element textarea. So it should be valid i guess :D
– Pavel Franta
Nov 26 '18 at 13:08
@connexo ? If I inspect plain, empty textarea in chrome dev tools, it contains at least empty <div></div> in shadow-root ... what exactly is unclear about that ? Question was how to restyle this div... if you dont know any useful answer so please don't waste your time with my question :)
– Pavel Franta
Nov 27 '18 at 15:06
1
1
Get deep into that; gist.github.com/praveenpuglia/0832da687ed5a5d7a0907046c9ef1813, ...but answering your question it's impossible to style it with any selector.
– Jakub Chlebowicz
Nov 22 '18 at 12:47
Get deep into that; gist.github.com/praveenpuglia/0832da687ed5a5d7a0907046c9ef1813, ...but answering your question it's impossible to style it with any selector.
– Jakub Chlebowicz
Nov 22 '18 at 12:47
2
2
You cannot access the content of a user-agent Shadow DOM. stackoverflow.com/a/38736220/4600982
– Supersharp
Nov 22 '18 at 13:44
You cannot access the content of a user-agent Shadow DOM. stackoverflow.com/a/38736220/4600982
– Supersharp
Nov 22 '18 at 13:44
@connexo :) actually in my case textarea has two divs, one for placeholder and second for the content itself. To my surprise, I could restyle placeholder directly from CSS with this ::placeholder, but still struggling with the content div restyling
– Pavel Franta
Nov 26 '18 at 9:41
@connexo :) actually in my case textarea has two divs, one for placeholder and second for the content itself. To my surprise, I could restyle placeholder directly from CSS with this ::placeholder, but still struggling with the content div restyling
– Pavel Franta
Nov 26 '18 at 9:41
@connexo I didn't customize anything, it is like it was, plain HTML element textarea. So it should be valid i guess :D
– Pavel Franta
Nov 26 '18 at 13:08
@connexo I didn't customize anything, it is like it was, plain HTML element textarea. So it should be valid i guess :D
– Pavel Franta
Nov 26 '18 at 13:08
@connexo ? If I inspect plain, empty textarea in chrome dev tools, it contains at least empty <div></div> in shadow-root ... what exactly is unclear about that ? Question was how to restyle this div... if you dont know any useful answer so please don't waste your time with my question :)
– Pavel Franta
Nov 27 '18 at 15:06
@connexo ? If I inspect plain, empty textarea in chrome dev tools, it contains at least empty <div></div> in shadow-root ... what exactly is unclear about that ? Question was how to restyle this div... if you dont know any useful answer so please don't waste your time with my question :)
– Pavel Franta
Nov 27 '18 at 15:06
add a comment |
1 Answer
1
active
oldest
votes
ShadowDOM was designed to prevent CSS from leaking INTO or OUT OF the shadowDOM. It is kindof a replacement for <iframe> which had the same limitations on it. Any CSS in the <iframe> can not affect the content outside of the <iframe> and the CSS outside the <iframe> can not affect the content inside <iframe>.
But you can affect the inner CSS by using one of the following options:
None of the options below work for existing HTML elements. These examples are only for custom elements you write.
The first way to style an element in shadowDOM is by placing the styles in the shadowDOM with the content.
class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<style>
p { background-color: #A00; color: white; }
</style>
<p>inner content</p>`;
}
}
customElements.define('my-el', MyEl);<my-el></my-el>The second, more limited way, is to use CSS variables:
class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<style>
p { background-color: var(--bgcolor, #A00); color: var(--color, white); }
</style>
<p>inner content</p>`;
}
}
customElements.define('my-el', MyEl);body {
--bgcolor: yellow;
--color: navy;
}<my-el></my-el>The third way, also limited, is through attributes or properties:
class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<p>inner content</p>`;
}
set bgColor(val) {
this.shadowRoot.querySelector('p').style.backgroundColor = val;
}
set color(val) {
this.shadowRoot.querySelector('p').style.color = val;
}
}
customElements.define('my-el', MyEl);
const myEl = document.querySelector('my-el');
myEl.bgColor = '#090';
myEl.color = 'white';<my-el></my-el>answered Nov 22 '18 at 16:59
IntervaliaIntervalia
4,62411033
add a comment |
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1 Answer
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active
oldest
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1 Answer
1
active
oldest
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active
oldest
votes
active
oldest
votes
ShadowDOM was designed to prevent CSS from leaking INTO or OUT OF the shadowDOM. It is kindof a replacement for <iframe> which had the same limitations on it. Any CSS in the <iframe> can not affect the content outside of the <iframe> and the CSS outside the <iframe> can not affect the content inside <iframe>.
But you can affect the inner CSS by using one of the following options:
None of the options below work for existing HTML elements. These examples are only for custom elements you write.
The first way to style an element in shadowDOM is by placing the styles in the shadowDOM with the content.
class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<style>
p { background-color: #A00; color: white; }
</style>
<p>inner content</p>`;
}
}
customElements.define('my-el', MyEl);<my-el></my-el>The second, more limited way, is to use CSS variables:
class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<style>
p { background-color: var(--bgcolor, #A00); color: var(--color, white); }
</style>
<p>inner content</p>`;
}
}
customElements.define('my-el', MyEl);body {
--bgcolor: yellow;
--color: navy;
}<my-el></my-el>The third way, also limited, is through attributes or properties:
class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<p>inner content</p>`;
}
set bgColor(val) {
this.shadowRoot.querySelector('p').style.backgroundColor = val;
}
set color(val) {
this.shadowRoot.querySelector('p').style.color = val;
}
}
customElements.define('my-el', MyEl);
const myEl = document.querySelector('my-el');
myEl.bgColor = '#090';
myEl.color = 'white';<my-el></my-el>answered Nov 22 '18 at 16:59
IntervaliaIntervalia
4,62411033
add a comment |
ShadowDOM was designed to prevent CSS from leaking INTO or OUT OF the shadowDOM. It is kindof a replacement for <iframe> which had the same limitations on it. Any CSS in the <iframe> can not affect the content outside of the <iframe> and the CSS outside the <iframe> can not affect the content inside <iframe>.
But you can affect the inner CSS by using one of the following options:
None of the options below work for existing HTML elements. These examples are only for custom elements you write.
The first way to style an element in shadowDOM is by placing the styles in the shadowDOM with the content.
class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<style>
p { background-color: #A00; color: white; }
</style>
<p>inner content</p>`;
}
}
customElements.define('my-el', MyEl);<my-el></my-el>The second, more limited way, is to use CSS variables:
class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<style>
p { background-color: var(--bgcolor, #A00); color: var(--color, white); }
</style>
<p>inner content</p>`;
}
}
customElements.define('my-el', MyEl);body {
--bgcolor: yellow;
--color: navy;
}<my-el></my-el>The third way, also limited, is through attributes or properties:
class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<p>inner content</p>`;
}
set bgColor(val) {
this.shadowRoot.querySelector('p').style.backgroundColor = val;
}
set color(val) {
this.shadowRoot.querySelector('p').style.color = val;
}
}
customElements.define('my-el', MyEl);
const myEl = document.querySelector('my-el');
myEl.bgColor = '#090';
myEl.color = 'white';<my-el></my-el>answered Nov 22 '18 at 16:59
IntervaliaIntervalia
4,62411033
add a comment |
ShadowDOM was designed to prevent CSS from leaking INTO or OUT OF the shadowDOM. It is kindof a replacement for <iframe> which had the same limitations on it. Any CSS in the <iframe> can not affect the content outside of the <iframe> and the CSS outside the <iframe> can not affect the content inside <iframe>.
But you can affect the inner CSS by using one of the following options:
None of the options below work for existing HTML elements. These examples are only for custom elements you write.
The first way to style an element in shadowDOM is by placing the styles in the shadowDOM with the content.
class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<style>
p { background-color: #A00; color: white; }
</style>
<p>inner content</p>`;
}
}
customElements.define('my-el', MyEl);<my-el></my-el>The second, more limited way, is to use CSS variables:
class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<style>
p { background-color: var(--bgcolor, #A00); color: var(--color, white); }
</style>
<p>inner content</p>`;
}
}
customElements.define('my-el', MyEl);body {
--bgcolor: yellow;
--color: navy;
}<my-el></my-el>The third way, also limited, is through attributes or properties:
class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<p>inner content</p>`;
}
set bgColor(val) {
this.shadowRoot.querySelector('p').style.backgroundColor = val;
}
set color(val) {
this.shadowRoot.querySelector('p').style.color = val;
}
}
customElements.define('my-el', MyEl);
const myEl = document.querySelector('my-el');
myEl.bgColor = '#090';
myEl.color = 'white';<my-el></my-el>answered Nov 22 '18 at 16:59
IntervaliaIntervalia
4,62411033
ShadowDOM was designed to prevent CSS from leaking INTO or OUT OF the shadowDOM. It is kindof a replacement for <iframe> which had the same limitations on it. Any CSS in the <iframe> can not affect the content outside of the <iframe> and the CSS outside the <iframe> can not affect the content inside <iframe>.
But you can affect the inner CSS by using one of the following options:
None of the options below work for existing HTML elements. These examples are only for custom elements you write.
The first way to style an element in shadowDOM is by placing the styles in the shadowDOM with the content.
class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<style>
p { background-color: #A00; color: white; }
</style>
<p>inner content</p>`;
}
}
customElements.define('my-el', MyEl);<my-el></my-el>The second, more limited way, is to use CSS variables:
class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<style>
p { background-color: var(--bgcolor, #A00); color: var(--color, white); }
</style>
<p>inner content</p>`;
}
}
customElements.define('my-el', MyEl);body {
--bgcolor: yellow;
--color: navy;
}<my-el></my-el>The third way, also limited, is through attributes or properties:
class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<p>inner content</p>`;
}
set bgColor(val) {
this.shadowRoot.querySelector('p').style.backgroundColor = val;
}
set color(val) {
this.shadowRoot.querySelector('p').style.color = val;
}
}
customElements.define('my-el', MyEl);
const myEl = document.querySelector('my-el');
myEl.bgColor = '#090';
myEl.color = 'white';<my-el></my-el>class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<style>
p { background-color: #A00; color: white; }
</style>
<p>inner content</p>`;
}
}
customElements.define('my-el', MyEl);<my-el></my-el>class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<style>
p { background-color: #A00; color: white; }
</style>
<p>inner content</p>`;
}
}
customElements.define('my-el', MyEl);<my-el></my-el>class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<style>
p { background-color: var(--bgcolor, #A00); color: var(--color, white); }
</style>
<p>inner content</p>`;
}
}
customElements.define('my-el', MyEl);body {
--bgcolor: yellow;
--color: navy;
}<my-el></my-el>class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<style>
p { background-color: var(--bgcolor, #A00); color: var(--color, white); }
</style>
<p>inner content</p>`;
}
}
customElements.define('my-el', MyEl);body {
--bgcolor: yellow;
--color: navy;
}<my-el></my-el>class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<p>inner content</p>`;
}
set bgColor(val) {
this.shadowRoot.querySelector('p').style.backgroundColor = val;
}
set color(val) {
this.shadowRoot.querySelector('p').style.color = val;
}
}
customElements.define('my-el', MyEl);
const myEl = document.querySelector('my-el');
myEl.bgColor = '#090';
myEl.color = 'white';<my-el></my-el>class MyEl extends HTMLElement {
constructor() {
super();
this.attachShadow({mode:'open'}).innerHTML = `
<p>inner content</p>`;
}
set bgColor(val) {
this.shadowRoot.querySelector('p').style.backgroundColor = val;
}
set color(val) {
this.shadowRoot.querySelector('p').style.color = val;
}
}
customElements.define('my-el', MyEl);
const myEl = document.querySelector('my-el');
myEl.bgColor = '#090';
myEl.color = 'white';<my-el></my-el>answered Nov 22 '18 at 16:59
IntervaliaIntervalia
4,62411033
edited Nov 22 '18 at 17:27
answered Nov 22 '18 at 16:59
IntervaliaIntervalia
4,62411033
answered Nov 22 '18 at 16:59
IntervaliaIntervalia
4,62411033
answered Nov 22 '18 at 16:59
IntervaliaIntervalia
4,62411033
4,62411033
add a comment |
add a comment |
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1
Get deep into that; gist.github.com/praveenpuglia/0832da687ed5a5d7a0907046c9ef1813, ...but answering your question it's impossible to style it with any selector.
– Jakub Chlebowicz
Nov 22 '18 at 12:47
2
You cannot access the content of a user-agent Shadow DOM. stackoverflow.com/a/38736220/4600982
– Supersharp
Nov 22 '18 at 13:44
@connexo :) actually in my case textarea has two divs, one for placeholder and second for the content itself. To my surprise, I could restyle placeholder directly from CSS with this ::placeholder, but still struggling with the content div restyling
– Pavel Franta
Nov 26 '18 at 9:41
@connexo I didn't customize anything, it is like it was, plain HTML element textarea. So it should be valid i guess :D
– Pavel Franta
Nov 26 '18 at 13:08
@connexo ? If I inspect plain, empty textarea in chrome dev tools, it contains at least empty <div></div> in shadow-root ... what exactly is unclear about that ? Question was how to restyle this div... if you dont know any useful answer so please don't waste your time with my question :)
– Pavel Franta
Nov 27 '18 at 15:06