generate random hash in javascript
let r = Math.random().toString(36).substring(7);
console.log("random", r);generate random hash in javascript
let r = Math.random().toString(36).substring(7);
console.log("random", r);How to use hash in javascript
function HashTable(obj)
{
this.length = 0;
this.items = {};
for (var p in obj) {
if (obj.hasOwnProperty(p)) {
this.items[p] = obj[p];
this.length++;
}
}
this.setItem = function(key, value)
{
var previous = undefined;
if (this.hasItem(key)) {
previous = this.items[key];
return previous;
}
else {
this.length++;
}
this.items[key] = value;
return previous;
}
this.getItem = function(key) {
return this.hasItem(key) ? this.items[key] : undefined;
}
this.hasItem = function(key)
{
return this.items.hasOwnProperty(key);
}
this.removeItem = function(key)
{
if (this.hasItem(key)) {
previous = this.items[key];
this.length--;
delete this.items[key];
return previous;
}
else {
return undefined;
}
}
this.keys = function()
{
var keys = [];
for (var k in this.items) {
if (this.hasItem(k)) {
keys.push(k);
}
}
return keys;
}
this.values = function()
{
var values = [];
for (var k in this.items) {
if (this.hasItem(k)) {
values.push(this.items[k]);
}
}
return values;
}
this.each = function(fn) {
for (var k in this.items) {
if (this.hasItem(k)) {
fn(k, this.items[k]);
}
}
}
this.clear = function()
{
this.items = {}
this.length = 0;
}
}Copyright © 2021 Codeinu
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