Skip to content

Instantly share code, notes, and snippets.

@jigewxy

jigewxy/index.html

Created November 8, 2017 06:49
Show Gist options
  • Star 0 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
  • Save jigewxy/343becbfcf7a004ec66f1e253832cba0 to your computer and use it in GitHub Desktop.
Save jigewxy/343becbfcf7a004ec66f1e253832cba0 to your computer and use it in GitHub Desktop.
Download ZIP
JS Bin // source http://jsbin.com/bucefofepe
Raw
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
</head>
<body>
<script id="jsbin-javascript">
function Queue (arr, length, allowRepeat){
if(length===undefined)
throw new UserException('Queue Length must be specified');
if(arr.length>length)
arr = arr.slice(arr.length-length); //slice the source if length exceeds
this.data = arr;
this.maxLength = length;
this.allowRepeat = allowRepeat || false;
}
Queue.prototype.addItem = function(item){
if(item!==0 && Boolean(item) === false)
{
throw new UserException('unable to add empty or null value');
}
else if(this.data.indexOf(item)!==-1 && this.allowRepeat !== true)
{
//repeat value has been detected, do nothing;
return;
}
else {
if(this.data.length <this.maxLength)
{this.data.push(item); }
else
{
this.data.shift();
this.data.push(item);
}
}
}
Queue.prototype.removeItem = function(item){
if(item===undefined)
{
this.data.shift();
}
else if(Boolean(item)===false)
{
throw new UserException('unable to remove invalid value');
}
else
{
var idx = this.data.indexOf(item);
if(idx!==-1)
this.data.splice(idx, 1);
else
console.log('value does not exist');
}
}
function UserException(message){
this.message = message;
this.name = "User Exception: ";
this.toString = function(){
return this.name+ this.message;
}
}
</script>
<script id="jsbin-source-javascript" type="text/javascript">function Queue (arr, length, allowRepeat){
if(length===undefined)
throw new UserException('Queue Length must be specified');
if(arr.length>length)
arr = arr.slice(arr.length-length); //slice the source if length exceeds
this.data = arr;
this.maxLength = length;
this.allowRepeat = allowRepeat || false;
}
Queue.prototype.addItem = function(item){
if(item!==0 && Boolean(item) === false)
{
throw new UserException('unable to add empty or null value');
}
else if(this.data.indexOf(item)!==-1 && this.allowRepeat !== true)
{
//repeat value has been detected, do nothing;
return;
}
else {
if(this.data.length <this.maxLength)
{this.data.push(item); }
else
{
this.data.shift();
this.data.push(item);
}
}
}
Queue.prototype.removeItem = function(item){
if(item===undefined)
{
this.data.shift();
}
else if(Boolean(item)===false)
{
throw new UserException('unable to remove invalid value');
}
else
{
var idx = this.data.indexOf(item);
if(idx!==-1)
this.data.splice(idx, 1);
else
console.log('value does not exist');
}
}
function UserException(message){
this.message = message;
this.name = "User Exception: ";
this.toString = function(){
return this.name+ this.message;
}
}</script></body>
</html>
Raw
jsbin.bucefofepe.js
function Queue (arr, length, allowRepeat){
if(length===undefined)
throw new UserException('Queue Length must be specified');
if(arr.length>length)
arr = arr.slice(arr.length-length); //slice the source if length exceeds
this.data = arr;
this.maxLength = length;
this.allowRepeat = allowRepeat || false;
}
Queue.prototype.addItem = function(item){
if(item!==0 && Boolean(item) === false)
{
throw new UserException('unable to add empty or null value');
}
else if(this.data.indexOf(item)!==-1 && this.allowRepeat !== true)
{
//repeat value has been detected, do nothing;
return;
}
else {
if(this.data.length <this.maxLength)
{this.data.push(item); }
else
{
this.data.shift();
this.data.push(item);
}
}
}
Queue.prototype.removeItem = function(item){
if(item===undefined)
{
this.data.shift();
}
else if(Boolean(item)===false)
{
throw new UserException('unable to remove invalid value');
}
else
{
var idx = this.data.indexOf(item);
if(idx!==-1)
this.data.splice(idx, 1);
else
console.log('value does not exist');
}
}
function UserException(message){
this.message = message;
this.name = "User Exception: ";
this.toString = function(){
return this.name+ this.message;
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment