Package Exports

iframe

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (iframe) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

iframe

higher level api for creating and removing iframes in browsers

usage

use with browserify

npm install iframe

var iframe = require('iframe')

// creates a new iframe and appends it to the container
frame = iframe({ container: document.querySelector('#container') , body: "hi" })

// completely removes previous iframe from container and generates a new one
frame.setHTML({ body: "bye" })

options

you can pass this into the constructor or setHTML

{
  body: string contents for `<body>`
  head: string contents for `<head>`
  html: string contents for entire iframe
  container: (constructor only) dom element to append iframe to, default = document.body
  sandboxAttributes: array of capability flag strings, default = ['allow-scripts']
  scrollingDisabled: (constructor only) boolean for the iframe scrolling attr
}

you can also just pass in a string and it will be used as {html: 'yourstring'}

security

by default the sandbox attribute is set with 'allow-scripts' enabled. pass in an array of capability flag strings. Available flags:

allow-forms allows form submission.
allow-popups allows (shock!) popups.
allow-pointer-lock allows (surprise!) pointer lock.
allow-same-origin allows the document to maintain its origin; pages loaded from https://example.com/ will retain access to that origin’s data.
allow-scripts allows JavaScript execution, and also allows features to trigger automatically (as they’d be trivial to implement via JavaScript).
allow-top-navigation allows the document to break out of the frame by navigating the top-level window.

gotchas

iframes are weird. here are some things I use to fix weirdness:

loading javascript into iframes

// setTimeout is because iframes report inaccurate window.innerWidth/innerHeight, even after DOMContentLoaded!
var body = '<script type="text/javascript"> setTimeout(function(){' + javascriptCodeHere + '}, 0)</script>'

getting rid of dumb iframe default styles

var head = "<style type='text/css'> html, body { margin: 0; padding: 0; border: 0; } </style>"

license

BSD