How to use js to change the readonly attribute value of multiple inputs at one time_javascript skills

复制代码 代码如下:

<script> <br>function doclick1(){ <br>var txtN = document.getElementsByTagName("input"); <br>for(i=0;i<txtN.length;i ){ <BR>if(txtN[i].type="text"){ <BR>txtN[i].readOnly=false; <BR>} <BR>} <BR>} <BR></script>