<!DOCTYPE html> <html> <head> <title>event propagation demo</title> </head> <body> <section> <h1>nested divs</h1> <div>one <div>child of one <div>child of child of one</div> </div> </div> </section> </body> </html>
1.window 2.document 3.<html> 4.<body> 5.<section> 6.<div>one 7.<div>child of one 8.<div>child of child of one
9.<div>child of child of one 10.<div>child of one 11.<div>one 12.<section> 13.<body> 14.<html> 15.document 16.window
<div> <button type="button">do something</button> </div> <form method="POST" action="/user"> <label>Enter user name: <input name="user"> </label> <button type="submit">submit</button> </form>
// submits the form
$('FORM').trigger('submit');
// submits the form by clicking the button
$('BUTTON[type="submit"]').trigger('click');
// focuses the text input
$('INPUT').trigger('focus');
// removes focus from the text input
$('INPUT').trigger('blur'); // submits the form
$('FORM').submit();
// submits the form by clicking the button
$('BUTTON[type="submit"]').click();
// focuses the text input
$('INPUT').focus();
// removes focus from the text input
$('INPUT').blur(); // clicks the first button - the click event does not bubble
$('BUTTON[type="button"]').triggerHandler('click'); // submits the form
document.querySelector('FORM').submit();
// submits the form by clicking the button
document.querySelector('BUTTON[type="submit"]').click();
// focuses the text input
document.querySelector('INPUT').focus();
// removes focus from the text input
document.querySelector('INPUT').blur(); var clickEvent;
if (typeof Event === 'function') {
clickEvent = new Event('click', {bubbles: false});
}
else {
clickEvent = document.createEvent('Event');
clickEvent.initEvent('click', false, true);
}
document.querySelector('BUTTON[type="button"]').dispatchEvent(clickEvent); // Triggers a custom "image-removed" element,
// which bubbles up to ancestor elements.
$libraryElement.trigger('image-removed', {id: 1}); var event = new CustomEvent('image-removed', {
bubbles: true,
detail: {id: 1}
});
libraryElement.dispatchEvent(event); var event = document.createEvent('CustomEvent');
event.initCustomEvent('image-removed', false, true, {id: 1});
libraryElement.dispatchEvent(event); var event;
// If the `CustomEvent` constructor function is not supported,
// fall back to `createEvent` method.
if (typeof CustomEvent === 'function') {
event = new CustomEvent('image-removed', {
bubbles: true,
detail: {id: 1}
});
}
else {
event = document.createEvent('CustomEvent');
event.initCustomEvent('image-removed', false, true, {
id: 1
});
}
libraryElement.dispatchEvent(event); $(window).on('resize', function() {
// react to new window size
}); // remove all resize listeners - usually a bad idea
$(window).off('resize'); var resizeHandler = function() {
// react to new window size
};
$(window).on('resize', resizeHandler);
// ...later
// remove only our resize handler
$(window).off('resize', resizeHandler); $(someElement).one('click', function() {
// handle click event
}); <button onclick="handleButtonClick()">click me</button>
buttonEl.onclick = function() {
// handle button click
}; buttonEl.addEventListener('click', function() {
// handle button click
}); window.addEventListener('resize', function() {
// react to new window size
}); var resizeHandler = function() {
// react to new window size
};
window.addEventListener('resize', resizeHandler);
// ...later
// remove only our resize handler
window.removeEventListener('resize', resizeHandler); someElement.addEventListener('click', function(event) {
// handle click event
}, { once: true }); var clickHandler = function() {
// handle click event
// ...then unregister handler
someElement.removeEventListener('click', clickHandler);
};
someElement.addEventListener('click', clickHandler); $(window).on('mousedown', function(event) {
event.preventDefault();
}); window.addEventListener('mousedown', function(event) {
event.preventDefault();
}); $someElement.on('click', function(event) {
event.stopPropagation();
}); // stop propagation during capturing phase
someElement.addEventListener('click', function(event) {
event.stopPropagation();
}, true); // stop propagation during bubbling phase
someElement.addEventListener('click', function(event) {
event.stopPropagation();
}); $someElement.on('click', function(event) {
event.stopImmediatePropagation();
}); someElement.addEventListener('click', function(event) {
event.stopImmediatePropagation();
}); $uploaderElement.trigger('uploadError', {
filename: 'picture.jpeg'
}); $uploaderParent.on('uploadError', function(event, data) {
showAlert('Failed to upload ' + data.filename);
}); // send the failed filename w/ an error event
var event = new CustomEvent('uploadError', {
bubbles: true,
detail: {filename: 'picture.jpeg'}
});
uploaderElement.dispatchEvent(event);
// ...and this is a listener for the event
uploaderParent.addEventListener('uploadError', function(event) {
showAlert('Failed to upload ' + event.detail.filename);
}); // send the failed filename w/ an error event
var event = document.createEvent('CustomEvent');
event.initCustomEvent('uploadError', true, true, {
filename: 'picture.jpeg'
});
uploaderElement.dispatchEvent(event);
// ...and this is a listener for the event
uploaderParent.addEventListener('uploadError', function(event) {
showAlert('Failed to upload ' + event.detail.filename);
}); $(window).on('load', function() {
// page is fully rendered
}); window.addEventListener('load', function() {
// page is fully rendered
}); $(document).ready(function() {
// markup is on the page
});
//or
$(function() {
// markup is on the page
}); document.addEventListener('DOMContentLoaded', function() {
// markup is on the page
}); $('IMG').on('load', function() {
// image has successfully loaded
});
$('IMG').on('error', function() {
// image has failed to load
}); document.querySelector('IMG').addEventListener('load', function() {
// image has successfully loaded
});
document.querySelector('IMG').addEventListener('error', function() {
// image has failed to load
}); $(window).on('beforeunload', function() {
return 'Are you sure you want to unload the page?';
}); window.addEventListener('beforeunload', function(event) {
var message = 'Are you sure you want to unload the page?';
event.returnValue = message;
return message;
}); import { Injectable } from "@angular/core";
@Injectable()
export class BrowserStorageService {
getSession(key: string): any {
const data = window.sessionStorage.getItem(key);
return JSON.parse(data);
}
setSession(key: string, value: any): void {
const data = value === undefined ? null : JSON.stringify(value);
window.sessionStorage.setItem(key, data);
}
removeSession(key: string): void {
window.sessionStorage.removeItem(key);
}
removeAllSessions(): void {
for (const key in window.sessionStorage) {
if (window.sessionStorage.hasOwnProperty(key)) {
this.removeSession(key);
}
}
}
getLocal(key: string): any {
const data = window.localStorage.getItem(key);
return JSON.parse(data);
}
setLocal(key: string, value: any): void {
const data = value === undefined ? null : JSON.stringify(value);
window.localStorage.setItem(key, data);
}
removeLocal(key: string): void {
window.localStorage.removeItem(key);
}
removeAllLocals(): void {
for (const key in window.localStorage) {
if (window.localStorage.hasOwnProperty(key)) {
this.removeLocal(key);
}
}
}
} import { BrowserStorageService } from "./browser-storage.service";
import { NgModule } from "@angular/core";
import { CommonModule } from "@angular/common";
import { RouterModule } from "@angular/router";
@NgModule({
imports: [CommonModule, RouterModule],
exports: [], // components that are used in app.component.ts will be listed here.
declarations: [], // components that are used in app.component.ts will be listed here.
providers: [BrowserStorageService] // singleton services of the whole app will be listed here.
})
export class CoreModule { }; import { CoreModule } from "./core/core.module";
@NgModule({
imports: [
//...
CoreModule,
//...
RouterModule.forRoot(appRoutes)
],
//...
})
export class AppModule { } import { BrowserStorageService } from "./../../core/browser-storage.service";
import { Component, OnInit } from "@angular/core";
@Component({
selector: "app-browser-storage-sample-test",
templateUrl: "./browser-storage-sample-test.component.html",
styleUrls: ["./browser-storage-sample-test.component.css"]
})
export class BrowserStorageSampleTestComponent implements OnInit {
fromSessionStorage = "";
fromLocalStorage = ""
sessionStorageKey = "sessionStorageKey1";
localStorageKey = "localStorageKey1"
constructor(private browserStorage: BrowserStorageService) { }
ngOnInit() {
}
sessionStorageSetItem() {
this.browserStorage.setSession(this.sessionStorageKey, "Val1");
}
sessionStorageGetItem() {
this.fromSessionStorage = this.browserStorage.getSession(this.sessionStorageKey);
}
localStorageSetItem() {
this.browserStorage.setLocal(this.localStorageKey, { key1: "val1", key2: 2 });
}
localStorageGetItem() {
this.fromLocalStorage = JSON.stringify(this.browserStorage.getLocal(this.localStorageKey));
}
} <h1>Browser storage sample</h1>
<div class="panel">
<button class="btn btn-primary" (click)="sessionStorageSetItem()" type="button">sessionStorage -> Set Item</button>
<button class="btn btn-success" (click)="sessionStorageGetItem()" type="button">sessionStorage -> Get Item</button>
<div class="alert alert-info" *ngIf="fromSessionStorage">
{{fromSessionStorage}}
</div>
</div>
<div class="panel">
<button class="btn btn-warning" (click)="localStorageSetItem()" type="button">localStorage -> Set Item</button>
<button class="btn btn-success" (click)="localStorageGetItem()" type="button">localStorage -> Get Item</button>
<div class="alert alert-info" *ngIf="fromLocalStorage">
{{fromLocalStorage}}
</div>
</div> 
CREATE FUNCTION dbo.checkPerson(@data XML)
RETURNS BIT WITH SCHEMABINDING AS
BEGIN
RETURN @data.exist('/people/person')
END
GO
CREATE TABLE tblXML
(
id INT PRIMARY KEY,
doc XML CHECK(dbo.checkPerson(doc)=1)
)
GO INSERT INTO tblXML (id, doc) VALUES ( 1, '<people><person name="Vahid"/></people>' ) INSERT INTO tblXML (id, doc) VALUES ( 2, '<people><emp name="Vahid"/></people>' )
The INSERT statement conflicted with the CHECK constraint "CK__tblXML__doc__060DEAE8". The conflict occurred in database "testdb", table "dbo.tblXML", column 'doc'. The statement has been terminated.
CREATE TABLE xml_tab ( id INT IDENTITY PRIMARY KEY, xml_col XML )
INSERT INTO xml_tab
VALUES ('<people><person name="Vahid"/></people>')
INSERT INTO xml_tab
VALUES ('<people><person name="Farid"/></people>') SELECT
id,
xml_col.value('(/people/person/@name)[1]', 'varchar(50)') AS name
FROM
xml_tab CREATE FUNCTION getIdValue(@doc XML)
RETURNS int WITH SCHEMABINDING AS
BEGIN
RETURN @doc.value('/*[1]/@Id', 'int')
END CREATE TABLE docs_tab ( id INT PRIMARY KEY, doc XML, CONSTRAINT id_chk CHECK(dbo.getIdValue(doc)=id) )
INSERT INTO docs_tab (id, doc) VALUES ( 1, '<Invoice Id="1"/>' ) INSERT INTO docs_tab (id, doc) VALUES ( 2, '<Invoice Id="1"/>' )
The INSERT statement conflicted with the CHECK constraint "id_chk". The conflict occurred in database "testdb", table "dbo.docs_tab". The statement has been terminated.
CREATE TABLE Invoices ( doc XML, id AS dbo.getIdValue(doc) PERSISTED PRIMARY KEY )
INSERT INTO Invoices VALUES ( '<Invoice Id="1"/>' ) INSERT INTO Invoices VALUES ( '<Invoice Id="1"/>' )
Violation of PRIMARY KEY constraint 'PK__Invoices__3213E83F145C0A3F'. Cannot insert duplicate key in object 'dbo.Invoices'. The duplicate key value is (1). The statement has been terminated.
DECLARE @doc XML
SET @doc = '<foo bar="baz" />'
SELECT @doc.query('/foo/@bar') XQuery [query()]: Attribute may not appear outside of an element
DECLARE @doc XML
SET @doc = '<foo bar="baz" />'
SELECT @doc.query('data(/foo/@bar)') DECLARE @x XML
SET @x = '<x>hello<y>world</y></x><x>again</x>'
SELECT @x.query('data(/*)') DECLARE @x XML
SET @x = '<x>hello<y>world</y></x><x>again</x>'
SELECT @x.query('string(/*)') XQuery [query()]: 'string()' requires a singleton (or empty sequence), found operand of type 'element(*,xdt:untyped) *'
SELECT @x.query('string(/*[1])') SELECT @x.query('string(/)') DECLARE @x XML = '<age>12</age>'
SELECT @x.query('string(/age[1])') CREATE XML SCHEMA COLLECTION root_el AS
'<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="urn:geo">
<xs:element name="Root" type="xs:string" />
</xs:schema>
'
GO DECLARE @xmlDoc XML
SET @xmlDoc = '<g:Root xmlns:g="urn:geo">datadata...</g:Root>'
SELECT @xmlDoc.query('
declare namespace g="urn:geo";
/g:Root/text()
') DECLARE @xmlDoc XML(root_el)
SET @xmlDoc = '<g:Root xmlns:g="urn:geo">datadata...</g:Root>'
SELECT @xmlDoc.query('
declare namespace g="urn:geo";
/g:Root[1]/text()
') XQuery [query()]: 'text()' is not supported on simple typed or 'http://www.w3.org/2001/XMLSchema#anyType'
elements, found 'element(g{urn:geo}:Root,xs:string) *'. DECLARE @xmlDoc XML(root_el)
SET @xmlDoc = '<g:Root xmlns:g="urn:geo">datadata...</g:Root>'
SELECT @xmlDoc.query('
declare namespace g="urn:geo";
data(/g:Root[1])
') data(/age/text())
<body ng-app>
<div ng-controller="FirstCtrl">
<p>{{title}}</p>
<div ng-controller="SecondCtrl">
<button ng-click="onUpdate()">Update First Ctrl Title</button>
</div>
</div>
</body> function ChildCtrl($scope){
$scope.onUpdate = function(){
this.$emit("Update_Title", "Good Bye");
};
} function FirstCtrl($scope){
$scope.title= "Hello";
$scope.$on("Update_Title", function(event, message){
$scope.title= message;
});
} function ParentCtrl($scope){
$scope.foo = "Hello";
$scope.$on("UPDATE_PARENT", function(event, message){
$scope.title= message;
$scope.$broadcast("DO_BIDDING", {
buttonTitle : "Taken over",
onButtonClick : function(){
$scope.title= "HAHA this button no longer works!";
}
});
});
}
function ChildCtrl($scope){
$scope.buttonTitle = "Update Parent";
$scope.onButtonClick = function(){
this.$emit("UPDATE_PARENT", "Updated");
};
$scope.$on("DO_BIDDING", function(event, data){
for(var i in data){
$scope[i] = data[i];
}
});
} 'use strict';
angular.module('myAppControllers', [])
.controller('FirstCtrl', function ($rootScope) {
$rootScope.$broadcast('UPDATE_ALL');
Or
$rootScope.$emit('UPDATE_ALL');
}); 
using System;
using System.ComponentModel.DataAnnotations;
namespace ImageGallery.WebApi.DomainClasses
{
public class Image
{
[Key]
public Guid Id { get; set; }
[Required]
[MaxLength(150)]
public string Title { get; set; }
[Required]
[MaxLength(200)]
public string FileName { get; set; }
[Required]
[MaxLength(50)]
public string OwnerId { get; set; }
}
} 
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<runtime>
<AppContextSwitchOverrides value="Switch.System.Net.DontEnableSystemDefaultTlsVersions=false"/>
</runtime>
</configuration> 
<?xml version="1.0" encoding="utf-8"?>
<RunSettings>
<RunConfiguration>
<MaxCpuCount>0</MaxCpuCount>
</RunConfiguration>
</RunSettings> 
"frameworks": {
"netcoreapp1.0": {}
}, "frameworks": {
"netcoreapp1.0": {
"imports": [
"dotnet5.6",
"portable-net45+win8"
]
}
},