script.js

function formatDoc(cmd, value=null){
    if(value){
        document.execCommand(cmd, false, value);
    } else{
        document.execCommand(cmd);
    }
}

function addLink(){
    const url= prompt('Insert url')
    formatDoc('createLink',url);
}

const content= document.getElementById('content');

content.addEventListener('mouseenter',function(){
    const a = content.querySelectorAll('a');
    a.forEach(item=> {
        item.addEventListener('mouseenter',function(){
            content.setAttribute('contenteditable',false);
            item.target='_blank';
        })
        item.addEventListener('mouseleave',function(){
            content.setAttribute('contenteditable',true);
        })
    })
})

const showCode= document.getElementById('show-code');
let active=false;

showCode.addEventListener('click',function(){
    showCode.dataset.active = !active;
    active= !active
    if(active){
        content.textContent = content.innerHTML;
        content.setAttribute('contenteditable',false);
    }else{
        content.innerHTML= content.textContent;
        content.setAttribute('contenteditable',true);
    }
})

const filename= document.getElementById('filename');

function fileHandle(value){
    if(value === 'new'){
        content.innerHTML = ''; 
        filename.value='untitled';
    }
    else if(value==='txt'){
        const blob= new Blob([content.innerText])
        const url= URL.createObjectURL(blob)
        const link= document.createElement('a');
        link.href= url;
        link.download = `${filename.value}.txt`;
        link.click();
    }
    else if(value === 'pdf'){
        html2pdf(content).save(filename.value);
    }

}