common helpers

bootstrap_helpers.js

/*
Añadir class según breakpoint al body
*/
var breakpoint = (function(body) {
		let bp_cur    = "";
		var bp_dom = {
		    get: function (o) { var obj = Object.create(this); obj.element = (typeof o == "object") ? o : document.createElement(o); return obj; },
		    app: function (o) { var obj = bp_dom.get(o); this.element.prepend(obj.element); return obj; },
		    att: function (k, v) { this.element.setAttribute(k, v); return this; },
		    cls: function (c) { this.element.className = c; return this; },
	    };
	    var bp_szs = ['xs', 'sm', 'md', 'lg', 'xl'];
		var bp_obj = {"xs": "d-block d-sm-inline", "sm": "d-sm-block d-md-inline", "md": "d-md-block d-lg-inline", "lg": "d-lg-block d-xl-inline", "xl": "d-xl-block" };
		var bp_ele = bp_dom.get(body).app('div').att('style','display:none;').att('id','bp_check');
		for (const [key, val] of Object.entries(bp_obj)) { bp_ele.app('span').cls(key+' '+val); }
		function isBlock(size){ return (getComputedStyle(document.querySelector('#bp_check .'+size)).display == 'block'); }
		function bp_checkCurrent(){ body.classList.remove(...bp_szs); for (const [key, val] of Object.entries(bp_obj)) { if( isBlock(key) ) bp_cur = key; breakpoint = key; }	body.classList.add(bp_cur); }
		bp_checkCurrent();
		window.onresize = bp_checkCurrent;
		return bp_cur;				
	}(document.body));

common_helpers.js

/* 
Chain DOM
*/
// source: https://www.orantec.uk/blog/2015/03/31/an-introduction-to-javascript-chaining
var cdom = {
  element: null,
  get: function (o) { var obj = Object.create(this); obj.element = (typeof o == "object") ? o : document.createElement(o); return obj; },
  append: function (o) { var obj = cdom.get(o); this.element.appendChild(obj.element); return obj; },
  text: function (t) { this.element.appendChild(document.createTextNode(t)); return this; },
  attribute: function (k, v) { this.element.setAttribute(k, v); return this; },
  css: function (c) { this.element.classList.add(c); return this; },
  event: function (e, f) { this.element.addEventListener(e, f, false); return this; }
}
var overlay = cdom.get(document.body).append("DIV").css("overlay");
overlay.append("H2").text("Hello World!");
overlay.append("P").text("Click the button below to close");
overlay.append("INPUT").attribute("type", "button").attribute("value", "Close").event("click", function () { document.body.removeChild(overlay.element); });

objetos_helper.js

// Source: https://gist.github.com/YagoLopez/1c2fe87d255fc64d5f1bf6a920b67484

// Buscar por key y val
function getObjects(obj, key, val) {
  var objects = [];
  for (var i in obj) {
    if(!obj.hasOwnProperty(i)) continue;
    if(typeof obj[i] == 'object') { objects = objects.concat(getObjects(obj[i], key, val)); } 
    else if(i == key && obj[i] == val || i == key && val == '') { objects.push(obj); } 
    else if(obj[i] == val && key == ''){ if(objects.lastIndexOf(obj) == -1){ objects.push(obj); } }
  }
  return objects;
}

// Buscar por key
function getValues(obj, key) {
  var objects = [];
  for (var i in obj) {
    if (!obj.hasOwnProperty(i)) continue;
    if (typeof obj[i] == 'object') { objects = objects.concat(getValues(obj[i], key)); } else if (i == key) { objects.push(obj[i]); }
  }
  return objects;
}

// Buscar por val
function getKeys(obj, val) {
  var objects = [];
  for (var i in obj) {
    if (!obj.hasOwnProperty(i)) continue;
    if (typeof obj[i] == 'object') { objects = objects.concat(getKeys(obj[i], val)); } else if (obj[i] == val) { objects.push(i); }
  }
  return objects;
}

strings_helper.js

/* String a slug */
function toSlug(str) {
	str = str.replace(/^\s+|\s+$/g, ''); str = str.toLowerCase(); 
	var from = "ãàáäâẽèéëêìíïîõòóöôùúüûñç·/_,:;"; var to   = "aaaaaeeeeeiiiiooooouuuunc------";
	for (var i=0, l=from.length ; i<l ; i++) { str = str.replace(new RegExp(from.charAt(i), 'g'), to.charAt(i)); }
	str = str.replace(/[^a-z0-9 -]/g, '').replace(/\s+/g, '-').replace(/-+/g, '-'); return str;
}

/* fixPrecio(5000) > $5.000 */
function fixPrecio(number, showsign=true) { 
  showsign = !showsign ? "" : "$"; 
  var i = String(parseInt(number = Math.abs(Number(number) || 0))); 
  var j = (j = i.length) > 3 ? j % 3 : 0; return showsign + (j ? i.substr(0, j) + "." : "") + i.substr(j); 
};

/* Primera letra en mayuscula */
function capitalize(str) { 
  var lower = str.toLowerCase(); return str.charAt(0).toUpperCase() + lower.slice(1); 
}

/* Limita caracteres de un string */
function (string, limit=20, end="...") { 
  if(string){ 
    var end;
    if(string.length > limit) { string = string.substring(0,limit)+end; } 
    return string; 
  } else { return ""; } 
}

/* Valida email */
function isEmail(email) { var regex = /^([a-zA-Z0-9_.+-])+\@(([a-zA-Z0-9-])+\.)+([a-zA-Z0-9]{2,4})+$/; return regex.test(email); }

/* Agregar ceros a un número si es menor a 10 */
function addZero(i) { if (i < 10) { i = "0" + i; } return i; }

/* Compartir url por whatsapp */
function shareWA() { window.location='https://wa.me/?text='+encodeURIComponent(window.location.href); }
function shareWA2(url){ window.open("https://wa.me/?text="+url, "_blank") || window.location.replace("https://wa.me/?text="+url); }