郑诚 (ZhengCheng) 1c7

How to add a collapsible section in markdown

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How to use packages that depend on Node.js core modules in React Native.

See the [node-libs-react-native][node-libs-react-native] library as a convenience for implementing this method.

I would suggest to store timestamp in the object you store in the localStorage

var object = {value: "value", timestamp: new Date().getTime()}
localStorage.setItem("key", JSON.stringify(object));

You can parse the object, get the timestamp and compare with the current Date, and if necessary, update the value of the object.

var object = JSON.parse(localStorage.getItem("key")),
  dateString = object.timestamp,

now = new Date().getTime().toString();

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!

\

	upload(files) {
	const config = {
	onUploadProgress: function(progressEvent) {
	var percentCompleted = Math.round((progressEvent.loaded * 100) / progressEvent.total)
	console.log(percentCompleted)
	}
	}

	let data = new FormData()
	data.append('file', files[0])

	axios({
	url: 'http://localhost:5000/static/example.pdf',
	method: 'GET',
	responseType: 'blob', // important
	}).then((response) => {
	const url = window.URL.createObjectURL(new Blob([response.data]));
	const link = document.createElement('a');
	link.href = url;
	link.setAttribute('download', 'file.pdf');
	document.body.appendChild(link);

	// Usage:
	// Copy and paste all of this into a debug console window of the "Who is Hiring?" comment thread
	// then use as follows:
	//
	// query(term \| [term, term, ...], term \| [term, term, ...], ...)
	//
	// When arguments are in an array then that means an "or" and when they are seperate that means "and"
	//
	// Term is of the format:
	// ((-)text/RegExp) ( '-' means negation )

	[
	{
	name:"HTML5",
	uri:"http://www.w3.org/TR/html5/single-page.html",
	category:"markup"
	},
	{
	name:"HTML 5.1",
	uri:"http://www.w3.org/TR/html51/single-page.html",
	category:"markup"