Nodejs Array Find findElement(predicate)

Method Source Code

Array.prototype.findElement = function(predicate) {
   for (var i=0; i<this.length; ++i) {
      if (predicate(this[i])) {
         return this[i];
      }//from w  w w .  j a  v a  2s  .  co m
   }
}

Array.prototype.contains = function(element) {
   return this.indexOf(element) != -1;
}

Related

1. findBy(field, value)

   Array.prototype.findBy = function (field, value) {
       return this.filter(function (i) {
           return i[field] === value;
       })[0];
   };
   

2. findByField(field,value)

   Array.prototype.findByField = function(field,value)
     for(var t=0; t<this.length; t++) {
       if(this[t][field] == value)
         return t;
     return null;
   };
   

3. findByProp(propName, propValue)

   Array.prototype.findByProp = function(propName, propValue) {
     for(var i = 0 ; i < this.length ; i++) {
       if(this[i][propName] === propValue) {
         return this[i];
   };
   

4. findByProperty(propName, value)

   Array.prototype.findByProperty = function (propName, value) {
       if (this.length > 0) {
           for (var i = this.length - 1; i > -1; i--) {
               var propObj = this[i];
               if (propObj[propName] === value) {
                   return propObj;
       return null;
   };
   

5. findBySku(sku)

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

6. 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;
   

7. findElements(config)

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

8. 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]; 
   };
   

9. findFirst(fun)

   Array.prototype.findFirst = function(fun) {
     for(var i = 0; i < this.length; i=i+1) {
       if(fun(this[i])) {
         return this[i];