<form bindsubmit='input1input'>
 <input name="input1" placeholder='这个是输入框' style='border:1rpx solid #000;'></input>
 <button form-type="submit">提交按钮</button>
</form>
<input bindinput='input2input' placeholder='这个是输入框' style='margin-top:200rpx;border:1rpx solid #000;'></input>
<button>提交按钮</button>

// pages/input/input.js
Page({
 data: { input1: "", input2: "" },
 input1input: function (e) {
  console.log(e);
  console.log(e.detail.value.input1)
 },
 input2input: function (e) {
  console.log(e);
  console.log(e.detail.value);
 }
})

// pages/input/input.js
Page({
 data: { input1: "this is the value for input1", input2: "this is the value for input2" },
 input1input: function (e) {
  console.log(e);
  console.log(e.detail.value.input1);
  this.setData({ input1: e.detail.value.input1 })
 },
 input2input: function (e) {
  console.log(e);
  console.log(e.detail.value);
  this.setData({ input2: e.detail.value })
 }
})

<form bindsubmit='input1input'>
 <input value='{{input1}}' name="input1" placeholder='这个是输入框' style='border:1rpx solid #000;height:100rpx;'></input>
 <button form-type="submit">提交按钮</button>
</form>
<input value="{{input2}}" bindinput='input2input' placeholder='这个是输入框' style='height:100rpx;margin-top:200rpx;border:1rpx solid #000;'></input>
<button>提交按钮</button>