- 技术人生
- JavaScript Object Notation
Array.prototype.indexOf
=
function
(obj)
...
{ var result=-1; for(var i=0;i<this.length;i++)...{ if(this[i]==obj)...{ result=i; break; } } return result; }
var
arr
=
new
Array(
5
); arr[
0
]
=
"
hello
"
; arr[
1
]
=
"
welcome to china
"
; arr[
2
]
=
"
good
"
; alert(arr.indexOf(
"
good
"
));
Array.prototype.inArray
=
function
(value)
...
{ for (var i = 0; i < this.length; i++) ...{ if (this[i] === value) ...{ return true; } } return false; }
; Array.prototype.max
=
function
()
...
{ for (var i = 1, max = this[0]; i < this.length; i++)...{ if (max < this[i]) ...{ max = this[i]; } return max; }; Array.prototype.min = function()...{ for (var i = 1, min = this[0]; i < this.length; i++)...{ if (min > this[i]) ...{ min = this[i]; } return min; }; Array.prototype.indexOf = function(p_var) ...{ for (var i=0; i<this.length; i++) ...{ if (this[i] == p_var) ...{ return(i); } } return(-1); } Array.prototype.exists = function(p_var) ...{return(this.indexOf(p_var) != -1);} Array.prototype.queue = function(p_var) ...{this.push(p_var)} Array.prototype.dequeue = function() ...{return(this.shift());} Array.prototype.removeAt = function(p_iIndex) ...{return this.splice(p_iIndex, 1);} Array.prototype.remove = function(o) ...{ var i = this.indexOf(o); if (i>-1) ...{ this.splice(i,1); } return (i>-1); } Array.prototype.clear = function() ...{ var iLength = this.length; for (var i=0; i < iLength; i++) ...{ this.shift(); } } Array.prototype.addArray = function(p_a) ...{ if (p_a) ...{ for (var i=0; i < p_a.length; i++) ...{ this.push(p_a[i]); } } } Array.prototype.Unique = function() ...{ var a = ...{}; for(var i=0; i<this.length; i++) ...{ if(typeof a[this[i]] == "undefined") a[this[i]] = 1; } this.length = 0; for(var i in a) this[this.length] = i; return this; }; Array.prototype.indexOf = function(obj, fromIndex) ...{ if (fromIndex == null) ...{ fromIndex = 0; } else if (fromIndex < 0) ...{ fromIndex = Math.max(0, this.length + fromIndex); } for (var i = fromIndex; i < this.length; i++) ...{ if (this[i] === obj) ...{ return i; } } return-1; }; Array.prototype.lastIndexOf = function(obj, fromIndex) ...{ if (fromIndex == null) ...{ fromIndex = this.length - 1; } else if (fromIndex < 0) ...{ fromIndex=Math.max(0, this.length+fromIndex); } for (var i = fromIndex; i >= 0; i--) ...{ if (this[i] === obj) ...{ return i; } } return -1; }; Array.prototype.insertAt = function(o, i) ...{ this.splice(i, 0, o); }; Array.prototype.insertBefore = function(o, o2) ...{ var i = this.indexOf(o2); if (i == -1) ...{ this.push(o); } else ...{ this.splice(i, 0, o); } }; Array.prototype.remove = function(o) ...{ var i = this.indexOf(o); if (i != -1) ...{ this.splice(i, 1); } }; Array.prototype.mm=function() ...{ var a=...{}, m=0, n=""; for(var i=0; i<this.length; i++) a[this[i]]?++a[this[i]]:a[this[i]]=1; for(i in a)...{m=Math.max(m, a[i]); if(m==a[i]) n=i;} return ...{"variable": n, "times": m}; }
