paper-autogrow-textarea has problems calculating height on multiple lines

[gertcuykens]

example

http://embed.plnkr.co/js3uFQSRsIR7SuGLt2gP/preview

this does not work

t1.value = 'some\ntext';
a1.update();

[gertcuykens]

Need expert advice please :) I need this thing working

[gghez]

Did you try:

this.$.a1.update(this.$.t1);

When reading autogrow source code, when update() argument is not provided it try evaluate an empty token array.

Also documentation is not up-to-date, some properties are unused in code like target and update() documentation is wrong because in fact you can pass an argument to it which is the targeted HTMLTextAreaElement.

Truth is in the code.

[notwaldorf]

Yeah, @gghez is right; you need to pass the textarea element as a parameter. I've created a PR to update the docs.

[gertcuykens]

Ok that worked thanks