input.t {border:1px solid #fff;background:#fff;}
input.s {border:1px solid #369;background:#fff;}
var test = document.getelementbyid("test");
var mysubmit = document.getelementbyid("submit");
test.ondblclick = function()
{
this.readonly = false;
this.classname = "s";
//说明 主要是通过控制样式来实现文本的样式和文本框样式的切换
mysubmit.style.display = "";
}
mysubmit.onclick = function()
{
test.readonly = true;
test.classname = "t";
this.style.display = "none";
}
[ctrl+a 全选 注:如需引入外部js需刷新才能执行]