sss

var txt =obj.createTextRange(); txt.moveStart('character',obj.value.length); txt.collapse(true); txt.select();







<v:PolyLine id="p" colro="black" filled="false" Points="0,0 0,100 200,100 200,400" style="position:relative">



<v:TextBox inset= "200px,100px,0pt,0pt" style= "font-size:10pt;Z-INDEX:10;Writing-mode:tb-rl；">

<span style="Writing-mode:tb-rl">span折线</span></v:TextBox>

</v:PolyLine>