Simple implementation of javascript js operation array addition, deletion, modification and search

Function definition

Array.prototype.indexOf = function(val) {
 
  for (var i = 0; i < this.length; i++) {
    if (this[i] == val) return i;
  }
  return -1;
};
Array.prototype.remove = function(val) {
  var index = this.indexOf(val);
  if (index > -1) {
    this.splice(index, 1);
  }
};
Array.prototype.insert = function (index, item) {
 this.splice(index, 0, item);
 
};

Usage:

myarray.remove(i); //Delete

//Update

myarray.remove(0);
myarray.insert(0,eventjson[0]);

//Insert

myarray.insert(0,eventjson[0]);

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