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前端第十八课:javascript基础7-PHP培训九期线上班
渡劫小能手
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$.post

向指定的资源提交要处理的数据
$.post( url, [ data ], [ success ], [ dataType ] )
第一个参数是请求到哪个页面,第二个参数是传递的数据,第三个是请求成功后怎么处理后台返回的数据,以什么格式处理后台返回的数据。
function里面的res随便写

  1. var _username = $.trim($('input[name="username"]').val());
  2. var _pwd = $.trim($('input[name="pwd"]').val());
  3. $.post('/dologin.php',{username:_username,pwd:_pwd},function(res){
  4. alert(res.msg);
  5. if(res.code==0){
  6. //window.location.href = "/home.html";
  7. window.location.reload();
  8. }
  9. },'json');
  1. $username = $_POST['username'];
  2. $pwd = $_POST['pwd'];
  3. if($username!='admin'){
  4. $data = json_encode(array('code'=>1,'msg'=>'用户名错误'));
  5. exit($data);
  6. }
  7. if($pwd!='123456'){
  8. $data = json_encode(array('code'=>1,'msg'=>'password error!'));
  9. exit($data);
  10. }
  11. $data = json_encode(array('code'=>0,'msg'=>'登录成功'));
  12. exit($data);

$.get

从指定的资源请求数据

  1. function city() {
  2. $.get('getcity.php',function (re) {
  3. var html = '';
  4. $.each(re.data,function (i,v) {
  5. console.log(v);
  6. html += '<option value="'+v.id+'">'+v.title+'</option>';
  7. });
  8. $('select[name="city"]').html(html);
  9. },'json');
  10. }
  1. <?php
  2. $citys = array(
  3. array('id'=>3,'title'=>'合肥'),
  4. array('id'=>6,'title'=>'黄山'),
  5. array('id'=>7,'title'=>'安庆')
  6. );
  7. $data = json_encode(array('code'=>0,'msg'=>'success','data'=>$citys));
  8. exit($data);

.serialize()

将用作提交的表单元素的值编译成字符串<br />把表单里面的可以提交的数据全部序列化提交

  1. $.post('/dologin.php',$('form').serialize(),function(res){
  2. alert(res.msg);
Correcting teacher:天蓬老师天蓬老师

Correction status:qualified

Teacher's comments:前端的交互数据, 很有用
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