[Nexus] Code Snippets

Comments

• Tysandr

  March 2018 edited March 2018

  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'

  "All we have to decide is what to do with the time that is given to us."

  
  

  0
• Tysandr

  March 2018

  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

  "All we have to decide is what to do with the time that is given to us."

  
  

  0
• Tysandr

  March 2018

  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.

  "All we have to decide is what to do with the time that is given to us."

  
  

  0
• Tysandr

  March 2018

  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.

  "All we have to decide is what to do with the time that is given to us."

  
  

  0