<textarea>hello world</textarea>
<selection-get-element> <javascript-set property="selectionStart" value="5"></javascript-set> <selection-get-element> <javascript-get property="selectionStart" return="number"> <assert-equal value="5" type="number">
<textarea>hello world</textarea>
<selection-get-element> <javascript-set property="selectionEnd" type="number"> <number-new value="3"> </javascript-set> <selection-get-element> <javascript-get property="selectionEnd" return="number"> <assert-equal value="3" type="number">