Remove special chars from a text (url conform)

by joquery

HTML

<textarea style="width:300px; height: 100px;" id="ta"></textarea>

<br/>

<button id="clickMe">do it</button>

JavaScript

function trans() {

    var ta = document.getElementById("ta");
    var val = ta.value;

    val = val.replace(/\s{1,}/g, "-");
    val = val.replace(/ä/g, "ae");
    val = val.replace(/Ä/g, "Ae");
    val = val.replace(/ö/g, "oe");
    val = val.replace(/Ö/g, "Oe");
    val = val.replace(/ü/g, "ue");
    val = val.replace(/Ü/g, "Ue");
    val = val.replace(/ß/g, "ss");
    val = val.replace(/"/g, "");
    val = val.replace(/“/g, "");
    val = val.replace(/„/g, "");
    val = val.replace(/,/g, "");
    val = val.replace(/\./g, "");
    
    ta.value = val;
    
}

var btn = document.getElementById("clickMe");
btn.onclick = trans;