<!DOCTYPE html>
12
<input type = "texe" id="uname">
<input type = "button" id="123" onclick="ceshi()" value="登录">
function ceshi(){
var name1=$("#uname").val();
$("#demo")=text.(name1);
alert(name1);
}
<!DOCTYPE html>
<input type = "texe" id="uname">
<input type = "button" id="123" onclick="ceshi()" value="登录">
function ceshi(){
var name1=$("#uname").val();
$("#demo")=text.(name1);
alert(name1);
}