added new localstorage "Data Base" library

HISTORY.md

@@ -4,6 +4,7 @@
 
 ### 2020-08-07
 * new dev version
+* added new localstorage library
 
 ## 6.1.4:
 * fixed "green flag" symbol size for embedded proects (for real ^^)=

libraries/LIBRARIES

@@ -12,11 +12,12 @@ variadic-reporters.xml	Variadic reporters	Versions of +, x, AND, and OR that tak
 ~	~
 maps_module.xml	World Map	Add interactive maps to projects
 textCostumes_module.xml	Text Costumes	Generate costumes from letters or words of text.
-speech_module.xml	Text to speech	output text using speech synthesis.
-animation_module.xml	Animation	glide, grow and rotate using easing functions.
-pixel_module.xml	Pixels	manipulate costumes pixel-wise.
-audioComp_module.xml	Audio Comp	analyze, manipulate and generate sound samples.
+speech_module.xml	Text to Speech	Output text using speech synthesis.
+animation_module.xml	Animation	Glide, grow and rotate using easing functions.
+pixel_module.xml	Pixels	Manipulate costumes pixel-wise.
+audioComp_module.xml	Audio Comp	Analyze, manipulate and generate sound samples.
 frequency_distribution_module.xml	Frequency Distribution Analysis	Analyze data for frequency distribution
+localstorage_module.xml	Data Base	Persistent key-value storage across Snap! sessions in the same browser
 ~	~
 ~	~
 ~	~

libraries/localstorage_module.xml

@@ -0,0 +1 @@
+<blocks app="Snap! 6, https://snap.berkeley.edu" version="1"><block-definition s="store key: %&apos;key&apos; value: %&apos;value&apos; in browser" type="command" category="other"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%s"></input></inputs><script><block s="doRun"><block s="reportJSFunction"><list><l>key</l><l>value</l></list><l>window.localStorage.setItem(&apos;-snap-project-&apos; + key, &apos;&apos; + value);</l></block><list><block var="key"/><block var="value"/></list></block></script></block-definition><block-definition s="stored data in browser" type="reporter" category="other"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doReport"><block s="evaluate"><block s="reportJSFunction"><list></list><l>var str = window.localStorage,&#xD;    len = str.length,&#xD;    result = [],&#xD;    key,&#xD;    i;&#xD;for (i = 0; i &lt; len; i += 1) {&#xD;  key = str.key(i);&#xD;  if (key.startsWith(&apos;-snap-project-&apos;)) {&#xD;    result.push(new List([key.slice(14), str.getItem(key)]));&#xD;  }&#xD;}&#xD;return new List(result);</l></block><list></list></block></block></script></block-definition><block-definition s="remove key: %&apos;key&apos; in browser" type="command" category="other"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doRun"><block s="reportJSFunction"><list><l>key</l></list><l>window.localStorage.removeItem(&apos;-snap-project-&apos; + key);</l></block><list><block var="key"/></list></block></script></block-definition><block-definition s="clear data in browser" type="command" category="other"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doWarp"><script><block s="doForEach"><l>item</l><custom-block s="stored data in browser"></custom-block><script><custom-block s="remove key: %s in browser"><block s="reportListItem"><l>1</l><block var="item"/></block></custom-block></script></block></script></block></script></block-definition></blocks>