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walfie/textarea.js

Created January 30, 2018 19:29
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Basic HTML edit/preview bookmarklet
Raw
textarea.js
(function(d) {
d.open();
d.write('<textarea id="input" spellcheck="false" style="flex:1;height:100%;resize:none;outline:none;font:15px monospace;color:#fff;background:#111;padding:10px;"><html>\n<head></head>\n<body>\nClick here to render\n</body>\n</html></textarea>');
d.write('<iframe id="iframe" style="flex:1;height:100%;"></iframe>');
d.close();
var s = d.body.style;
s.display = 'flex';
s.margin = 0;
var i = d.getElementById('input');
i.onkeydown = function(e) {
if ((e.keyCode || e.which) != 9) {
return;
}
e.preventDefault();
var s = this.selectionStart;
this.value = this.value.substring(0, s) + " " + this.value.substring(this.selectionEnd);
this.selectionEnd = s + 2;
};
i.select();
var ifr = d.getElementById('iframe');
i.addEventListener('click', function() {
var idoc = ifr.contentWindow.document;
idoc.open();
idoc.write(i.value);
idoc.close();
});
d.title = 'Textarea';
}(document));
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