Applying target(_blank) attribute to all anchor tags with JS

Question

In the below code, I want to remove the checkbox function and want to open all anchor tags with _blank attribute. Please remove the form also. Thanks!
<script>
function newTab(f) {
var els = document.getElementsByTagName('a'); //read anchor elements into variable
if(f.tab.checked == true) { //If the box is checked.
for (var i in els) {
els[i].setAttribute('target', '_blank'); //Add 'target="blank"' to the HTML
}
} else { // not checked...
for (var i in els) {
els[i].setAttribute('target', '_self'); //Add 'target="self" to HTML
}
}
} //end function.
</script>
<form>
<input type="checkbox" name="tab" onclick="newTab(this.form)" />
<label>Open Links In New Tab</label>
</form>
<a href="#">Test_Link</a>

Answer 1

Is this what you want? Let me know :))
https://code.sololearn.com/W5qXw5JHPq8W/?ref=app

Answer 2

Yes, it worked for me. Thanks!