Nodejs String Insert insert(start, new_string)

Method Source Code

/*/* w  w  w . ja v a 2  s .  co  m*/
   Native type extentions.
   v1.0
   Niels Groot Obbink

   Extend some native JavaScript types with useful methods.
*/

// Insert a string at the [start] character position.
String.prototype.insert = function(start, new_string)
{
   return this.slice(0, start) + new_string + this.slice(start);
};


// Remove [length] characters from [start] and insert [insert] at position [start].
String.prototype.splice = function(start, length, insert)
{
   return this.substring(0, start) + insert + this.substring(start + length);
};


// Copy properties from [other] to [this] object.
Object.prototype.extend = function(other)
{
   let property;

   for (property in other)
   {
      if( other.hasOwnProperty(property) && other[property] != null )
      {
         this[property] = other[property];
      }
   }

   return this;
};

Related

1. insert(index, string)

   String.prototype.insert = function (index, string) {
     if (index > 0)
       return this.substring(0, index) + string + this.substring(index, this.length);
     else
       return string + this;
   };
   

2. insert(index, string)

   Object.size = function(obj) {
       var size = 0, key;
       for (key in obj) {
           if (obj.hasOwnProperty(key)) size++;
       return size;
   };
   String.prototype.insert = function (index, string) {
     if (index > 0)
   ...
   

3. insert(index, string)

   String.prototype.insert = function (index, string) {
     if (index > 0) {
       return this.substring(0, index) + string + this.substring(index, this.length);
     else {
       return string + this;
   };
   

4. insert(start, new_string)

   String.prototype.insert = function(start, new_string)
     return this.slice(0, start) + new_string + this.slice(start);
   };
   String.prototype.splice = function(start, length, insert)
     return this.substring(0, start) + insert + this.substring(start + length);
   };
   Object.prototype.extend = function(other)
   ...
   

5. insert(start, new_string)

   String.prototype.insert = function(start, new_string)
     return this.slice(0, start) + new_string + this.slice(start);
   };
   String.prototype.splice = function(start, length, insert)
     return this.substring(0, start) + insert + this.substring(start + length);
   };
   

6. insert(text,at)

   String.prototype.insert = function(text,at) {
       if(at == null || at > this.length)
           at = this.length;
       else if(at < 0)
           at = 0;
       return this.substring(0,at)+text+this.substring(at);
   

7. insert(value, position)

   String.prototype.insert = String.prototype.insert || function (value, position) {
     if (!value) return this;
     position = position === 'end' ? this.length : position === 'start' ? 0 : position || 0
     return this.slice(0, position) + value + this.slice(position)
   

8. insertAt( loc, strChunk )

   String.prototype.insertAt = function ( loc, strChunk ) {
       return (this.valueOf().substr( 0, loc )) + strChunk + (this.valueOf().substr( loc ))
   };