I want to create a new property and get id for elements (demo1, demo2, demo3).
id: this.id = How do I get the id from the elements here?
Element.prototype.myData = {
id: '1',
name: 'Caesar',
title: 'Imperator'
var att = "{id:"+id+";name:"+name+";title:"+title+"}";
document.getElementById(this.id).setAttribute("myAtt", att); // get id of element
};
alert(document.getElementById("demo1").myData.id = "129"); // alert 129
alert(document.getElementById("demo2").myData.id = "65"); // alert 65
alert(document.getElementById("demo2").myData.name = "Aleksandar"); // alert Aleksandar
alert(document.getElementById("demo3").myData.title); // alert Imperator<div id="demo1"></div>
<div id="demo2"></div>
<div id="demo3"></div>class CustomDiv extends HTMLDivElement {
myData = {
id: '',
name: 'Caesar',
title: 'Imperator'
};
constructor() {
super();
}
connectedCallback() {
this.myData.id = this.getAttribute('id');
}
}
customElements.define('custom-div',CustomDiv , {extends: 'div'});
alert(document.getElementById("demo1").myData.id); // alert demo1
alert(document.getElementById("demo2").myData.name); // alert Cesar
alert(document.getElementById("demo3").myData.title); // alert Imperator<div is="custom-div" id="demo1"></div>
<div is="custom-div" id="demo2"></div>
<div is="custom-div" id="demo3"></div>