My Aurelia cheat sheet

A collection for Aurelia / typescript / javascript as and when I encounter them. For a post on getting set up with Aurelia JS see this post: https://www.technical-recipes.com/2019/getting-started-with-aurelia-js/ https://www.technical-recipes.com/2019/getting-started-with-aurelia-js-part-2/ 1. Hello World! app.js [code language="js"] export class App { constructor() { this.myData = 'Welcome to Aurelia app!'; } } [/code] app.html [code language="html"] <template> <h3>${myData}</h3> </template> [/code] Giving the following output: [caption id="attachment_9033" align="alignnone" width="630"]Hello World! Hello World![/caption] 2. Detecting mouse movement events From here: https://bl.ocks.org/Vheissu/db72c2d41709697134654d5287913c0c app.html [code language="html"] <template> <div mousemove.delegate="mousemove($event)" style="background: teal; border: 2px dotted #333; color: #FFF; font-size: 16px; font-weight: bold; height: 250px; width:500px;">Move mouse in here...</div> <ul if.bind="mouseevents"> <li repeat.for="mouseevent of mouseevents">x: ${mouseevent.x} y: ${mouseevent.y}</li> </ul> </template> [/code] app.js [code language="js"] export class App { constructor() { this.mouseevents = []; } mousemove(e) { this.mouseevents.push({x: e.clientX, y: e.clientY}); } } [/code] Giving the following output: [caption id="attachment_9028" align="alignnone" width="630"]Aurelia Detecting mouse event in Aurelia[/caption] 3. Two-way data binding In this example we have our view-model and view linked. Firstly the text is set in the constructor. Then whenever we enter some text inside the input field, the view will be updated. app.js [code language="js"] export class App { constructor() { this.myData = 'Enter some text!'; } } [/code] app.html [code language="html"] <template> <input id = "name" type = "text" value.bind = "myData" /> <h3>${myData}</h3> </template> [/code] Giving the following output: [caption id="attachment_9036" align="alignnone" width="630"]Two-way binding Two-way binding[/caption] 4. Displaying a list of controls using repeat.for Firstly an excellent page at 'I Like Kill Nerds' blog which gives lots of useful examples: https://ilikekillnerds.com/2015/10/working-with-the-repeater-in-aurelia/ A more basic get-you-started example here: app.html [code lang="html"] <template> <div repeat.for="message of messages"> <strong>Message: </strong>${message} </div> </template> [/code] app.js [code lang="js"] export class App { messages = ["ABC", "DEF", "123", "XYZ"]; } [/code] Giving the following output:

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