Nodejs Array Find findFirst(fun)

Method Source Code

Array.prototype.findFirst = function(fun) {
  for(var i = 0; i < this.length; i=i+1) {
    if(fun(this[i])) {
      return this[i];
    }/*from w  w  w.j av  a2s  . c o  m*/
  }
}

Related

1. findBySku(sku)

   Array.prototype.findBySku = function(sku) {
     var result = null;
     this.forEach(function(elem, index) {
       if (elem.sku === sku) {
         result = elem;
     })
     return result;
   };
   ...
   

2. findElement(predicate)

   Array.prototype.findElement = function(predicate) {
     for (var i=0; i<this.length; ++i) {
       if (predicate(this[i])) {
         return this[i];
   Array.prototype.contains = function(element) {
     return this.indexOf(element) != -1;
   ...
   

3. findElement(search, func)

   Array.prototype.findElement = function(search, func) {
     for(var i = 0; i < this.length; i++) {
       if(func(search, this[i]))
          return this[i];
     return null;
   

4. findElements(config)

   Array.prototype.findElements = Array.prototype.findElements || function (config) {
       var i,
       j,
           key,
           keys = [],
           isFound,
           el = null,
           results = [];
       for (key in config) {
   ...
   

5. findFirst(fnCheckCallback, parameter)

   Array.prototype.findFirst = function(fnCheckCallback, parameter) {
     for (var elementIndex in this) {
       if (this.hasOwnProperty(elementIndex) && fnCheckCallback.apply(this[elementIndex], [elementIndex, parameter])) {
         return this[elementIndex]; 
   };
   

6. findFirst(test)

   Array.prototype.findFirst = function (test) {
       var i, item;
       for (i = 0; i < this.length; i++) {
     item = this[i];
     if (test(item)) {
         return item;
   };
   ...
   

7. findHighestNumber(inField)

   Array.prototype.findHighestNumber = function(inField)
     var tmp = [];
     for (var i = 0; i < this.length; i++) {
       tmp[i] = Number(this[i][inField]);
     if(this.length < 1)
       return 0;
     return Math.max.apply(Math, tmp);
   ...
   

8. findIdx(fn)

   Array.prototype.findIdx = function(fn) {
       return this.indexOf(this.filter(val => fn(val))[0]);
   };
   

9. findIfNotError(filter)

   Array.prototype.findIfNotError = function(filter) {
       var result = this.find(filter);
       if ( !result ) {
           throw new Error();
       return result;