add chapter operation

Sascha Schulz

2025-01-27 c855a520de76a2f4f1ca7deb37da397839f1ad97

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class HelloSayerComponent extends HTMLElement { 
    constructor() { 
        super(); 
 
        this.root = this.attachShadow({mode: "open"}); 
 
        this.root.innerHTML = ` 
            <style> 
                span { 
                    background-color: coral; 
                    color: white; 
                } 
            </style> 
            <span>Hello <slot></slot>!</span> 
        `; 
    } 
} 
 
window.customElements.define("hello-sayer", HelloSayerComponent);