When placing a Bootstrap 5.3 modal inside a container other than body, bootstrap's
Backdrop's source code has this part:
const Default = {
className: 'modal-backdrop',
clickCallback: null,
isAnimated: false,
isVisible: true, // if false, we use the backdrop helper without adding any element to the dom
rootElement: 'body' // give the choice to place backdrop under different elements
}
However there is no mechanism provided to customize rootElement
I fixed as follows in bootstrap.bundle.js version v5.3.3
- Find class Backdrop extends Config, there _configAfterMerge(config)
- Replace config.rootElement = ... with config.rootElement = getElement(config.rootElement) || document.body; with will fallback to body if rootElement is not found, ie. null returned from getElement():
_configAfterMerge(config) {
// use getElement() with the default "body" to get a fresh Element on each instantiation
config.rootElement = getElement(config.rootElement) || document.body;
return config;
}
- Find class Modal extends BaseComponent, there _initializeBackDrop()
- add after isAnimated: this._isAnimated() a new property rootElement: this._config.rootElement:
_initializeBackDrop() {
return new Backdrop({
isVisible: Boolean(this._config.backdrop),
// 'static' option will be translated to true, and booleans will keep their value,
isAnimated: this._isAnimated(),
rootElement: this._config.rootElement
});
}
When initializing your bootstrap with new bootstrap add rootElement:
const myModal = new bootstrap.Modal(
document.getElementById('myModal')
, {
backdrop: "static",
rootElement: '#your-div'
}
)
myModal.show()
Here's my usage in SPA.
// I have a dynamic modal in my SPA, so I'm rendering a modal
// inside a DocumentFragment first and save this modal object
// in a variable so that I can call modal's methods after, like close()
const VALUES = {
modal: {
id: 'my-modal',
obj: null
}
}
const fragment = document.createRange().createContextualFragment(
`<div>
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