[Nexus] Code Snippets

Tysandr

Making one for Nexus:

Purpose:
Grabbing css values of widths/heights, etc and turning them into numbers

Requirements:
none

Code:

_clean = function(n) {
  if (typeof n !== 'string') { return n }
  var x = Number( n.replace(/[^-\d\.]/g,''))
  return x }<br>

Output:
Turns '394px' into 393 (integer)

Tysandr

Purpose:
Pads strings with extra characters

Requirements:
none

Code:

_lpad = function(str, len, ch) {
   if (typeof str == 'number') { str = str.toString() }
   if (ch == null) { ch = ' ' }
   var r = len - str.length
   if (r < 0) { r = 0 }
   return ch.repeat(r) + str }

_rpad = function(str, len, ch) {
   if (typeof str == 'number') { str = str.toString() }
   if (ch == null) { ch = ' ' }
   var r = len - str.length
   if (r < 0) { r = 0 }
   return str + ch.repeat(r)  }

Output:
_lpad('tornado', 12, '.') == '.....tornado'

Tysandr

Purpose:
Prints out Javascript onto the main window

Requirements:
none

Code:

_display = function(a) {
  var r = function(k,v) {
   if (typeof v === 'function') {
     var q = '' + v
         q = q.substring(0, 79)
     return 'FUNCTION >>   ' + q }
   return v }
  var x = JSON.stringify(a, r, 3)
  ow_Write('<span class="normal">' + x + '</span><br>') }<br>

Output:
As described

Tysandr

Purpose:
Finding the interval between two Date objects

Requirements:
none

Code:

_interval = function(a,b) {
  if (!a) { return 0 }
  var a = a
  var b = b || new Date()
  if (b > a) { b = [a, a = b][0] } // swap variable contents
  var diff  = a.getTime() - b.getTime()
  var msecs = diff % 1000
  var secs  = Math.floor(diff / 1000)
  var mins  = Math.floor(secs / 60)
      secs  = secs % 60
  var hrs   = Math.floor(mins / 60)
      mins  = mins % 60
  var days  = Math.floor(hrs  / 24)
       hrs  =  hrs % 24
  var s = {}
      s.msecs = msecs
      s.secs  = secs
      s.mins  = mins
      s.hrs   = hrs
      s.days  = days
  return s }<br>

Output:
Turns DateA - DateB into {days:0, hrs:4, mins: 35, secs:12, msecs: 140} for instance.

Tysandr

Purpose:
Download data onto computer.

Requirements:
none

Code:

_save = function(datum, filename) {
  var f = function() {
   var data = ''
   for (var i=0; i<datum.length; i++) {
     data += datum[i]   
   }
   var x = new Blob([data], { type: 'text/plain' })
   var t = window.URL.createObjectURL(x)
   return t }
  
  var a = document.createElement('a')
      a.setAttribute('download', filename)<br>      a.href = f()
  document.body.appendChild(a)
  window.requestAnimationFrame( function() {
   var e = new MouseEvent('click')
   a.dispatchEvent(e)
   document.body.removeChild(a)
  })  }<br>

Output:
Turns data into strings and saves it into a file as filename without need for mouse navigation.