Google Apps Script – fix cursor – part 016.

This function will fix the crash of the cursor when you try to insert elements or add bookmarks.

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function fix_cursor(){
// get the cursor position stored by onCursorMove()
var properties = PropertiesService.getScriptProperties();
var position = properties.getProperty("position");
if (position !== null){
    // set cursor to last-stored position
    doc.setCursor(doc.newPosition(text, position));
  }
}

Security – Disable blogger’s comments spam.

Comment spam is a term referencing a broad category of spambot or spammer postings which abuse web-based forms to post unsolicited advertisements as comments on forums, blogs, wikis and online guestbooks. see the Wikipedia. Log on to your blogger’s dashboard. Navigate to your blog’s Settings – Comments. On the Comments menu, select Hide to disable… Read More »

Google Apps Script – show all connections with People A.P.I. – part 015.

This tutorial is about Google Apps Script with People A.P.I. You need to create a new document into Google Driver to create a project script for Google Apps Script. Use Tools – Script editor on this document. Into the new tab go to Resources – Advanced Google Services and activate People API v1. Take a look… Read More »

JavaScript – The canvas sin code.

Today’s tutorial is about using canvas with the javascript script with the use of the mathematical sin function. This JavaScript code is simple to understand. Start with the HTML5 source code:

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<canvas id="id_canvas"></canvas>

Use this javascript code:

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can=document.getElementById("id_canvas");
x=can.getContext("2d");
can.width=640;
can.height=480;
S=Math.sin;
frames = 30;
w2 = 640;
update_draw=()=>{
for(x.fillRect(0,0,i=(w=w2),i);i--;){
x.clearRect(S(time_run),S(time_run)*w,w,1)
}
time_run+=1/frames
requestAnimationFrame(update_draw)
}
time_run=0
update_draw()

The definition of variables and function sin is easy to understand. The first fillRect will create the area… Read More »