表单提交即使我有“return false”

Question

我有一个按钮，点击时会调用 function1，而该按钮会调用另一个 function2。如果 function2 满足条件，它应该返回 false 并在那里死掉，但它会继续，返回到 function1，执行 function1 的其余部分并提交表单。我是 javascript 新手。

 <input type="button" value="Submit" onclick="function1()" />

 function function1() {
  function2();
  //execute rest of function
 }

 function2() {
 var this;
 var that;
 if(!this || !that) {
 alert("You did not fill out fields on the form under Tab1");
 return false;  //I thought it was supposed to stop here
 }
 } 

Answer 1

在函数1中，当你调用函数2时，如果你想让函数1在函数2返回false时停止，那么你必须在函数1内停止它，如下所示：

function function1() {
  // If function2 returns false, then stop function1
  if (!function2()) return;
  //execute rest of function
 }

 function2() {
  var this;
  var that;
  if(!this || !that) {
   alert("You did not fill out fields on the form under Tab1");
   return false;  //I thought it was supposed to stop here
  }
 }