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Stephan Schmitz eyecatchup

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View calc-sapisidhash.js
async function getSApiSidHash(SAPISID, origin) {
function sha1(str) {
return window.crypto.subtle.digest("SHA-1", new TextEncoder("utf-8").encode(str)).then(buf => {
return Array.prototype.map.call(new Uint8Array(buf), x=>(('00'+x.toString(16)).slice(-2))).join('');
});
}
const TIMESTAMP_MS = Date.now();
const digest = await sha1(`${TIMESTAMP_MS} ${SAPISID} ${origin}`);
@eyecatchup
eyecatchup / draw-bootstrap-grid.js
Created Mar 30, 2022
Draw the Bootstrap grid as a full page overlay
View draw-bootstrap-grid.js
var grid = 12
var cols = document.createDocumentFragment()
var col = document.createElement('div')
col.style.cssText = `height: ${document.documentElement.scrollHeight}px; width: calc(100% / ${grid}); background-color: rgba(240, 128, 128, 0.3);`
var innerCol = document.createElement('div')
innerCol.style.cssText = `height: ${document.documentElement.scrollHeight}px; width: calc(100% - 30px); margin: auto 15px; background-color: rgba(244, 0, 0, 0.1); position: relative;`
col.appendChild(innerCol)
for (var i, i = 1; i <= grid; i++) {
@eyecatchup
eyecatchup / vue.config.js
Created Sep 25, 2020
(Vue.js) Webpack dev server config to use a (corporate) proxy
View vue.config.js
const HttpsProxyAgent = require('https-proxy-agent')
const proxy = new HttpsProxyAgent('http://1.2.3.4:3128')
module.exports = {
// ...
configureWebpack: {
devServer: {
// ...
proxy: {
@eyecatchup
eyecatchup / error-stringify.js
Created Feb 18, 2020
Custom replace function for JSON.stringify to stringify JS Error Objects.
View error-stringify.js
jsonFriendlyErrorReplacer = (key, value) => {
if (value instanceof Error) {
value = Object.assign({},
value, // Pull all enumerable properties, supporting properties on custom Errors
{ // Explicitly pull Error's non-enumerable properties
name: value.name,
message: value.message,
stack: value.stack
}
)
@eyecatchup
eyecatchup / ionic-native-cordova-inappbrowser-executescript-ios.md
Last active Aug 31, 2021
Ionic Native / Cordova InAppBrowser: Multiple `executeScript` Promises
View ionic-native-cordova-inappbrowser-executescript-ios.md

Ionic Native / Cordova InAppBrowser: Multiple executeScript Promises

I recently worked on a project with Ionic Native and Cordova. One thing I noticed (and took me some time to resolve), was an issue with the then function of the InAppBrowser plugin's executeScript Promise not being executed on iOS.

TL;DR When you use multiple executeScript Promises within one method, the then functions will not fire on iOS. You have to await results.

To illustrate the issue, let's declare a new InAppBrowser instance:

const browser = this.iab.create('https://example.com', '_blank');
@eyecatchup
eyecatchup / catch-js-error-stacktrace.js
Created Jul 1, 2019
JavaScript global error handling
View catch-js-error-stacktrace.js
var sendError = function (err) {
console.log('Caught JS client error:');
console.dir(err);
var xhr = new XMLHttpRequest();
xhr.open('POST', '/api/error/add', true);
xhr.setRequestHeader('Content-type', 'application/json; charset=utf-8');
xhr.send(JSON.stringify(err));
};
@eyecatchup
eyecatchup / search-devtools-history.md
Created May 24, 2019
Search Chrome Devtools history
View search-devtools-history.md

Search Chrome Devtools history

  1. Undock the console (click on the icon in the bottom-left corner, ![undock icon][1]).
    (if you don't see ![the undock icon][2], but ![][3], then hold the mouse pressed for a few seconds to get the desired icon)
  2. Press Ctrl + Shift + J to open the console for this console. (On OSX use Cmd + Option + i)
  3. Use the following snippet to get an array of matches for your search term:
const searchHistory = query => {console.dir(JSON.parse(localStorage.getItem('consoleHistory')).filter(function(item){ return ~item.indexOf(query);}))}
searchHistory('token')
@eyecatchup
eyecatchup / js-generator-functions.md
Last active Jul 23, 2019
Creating a `GeneratorFunction` in JavaScript
View js-generator-functions.md

Generator defined using the function* statement syntax:

// function *idMaker(){ <- also possible, even though no reference found
function* idMaker(){
  var index = 0;
  while(index < index+1)
    yield index++;
}
@eyecatchup
eyecatchup / smooth-scrolling-polyfill.md
Last active Apr 6, 2022
Smooth Scroll behavior polyfill
View smooth-scrolling-polyfill.md

The Scroll Behavior specification has been introduced as an extension of the Window interface to allow for the developer to opt in to native smooth scrolling. To date this has only been implemented in Chrome, Firefox and Opera.

There's a complete polyfill here (3.3KB minified). But most of the times, the following is enough for me (641 bytes minified):

smooth-scrolling-poyfill.js

Use as: scrollToElem('#elem-selector');