文本框是否考虑按Enter键作为提交？

Question

Do all textboxes ( <input type="text" ) consider "PRESSING THE ENTER KEY" as submit action?

IF yes, do all browser supports this?

If no, the what's wrong with my code detecting the enter key on press?

$('#quick-search-input').bind('keyup', function(e) {
  if ( e.keyCode === 13 || $('#the-button').val() ) {
     alert("pressed");
  }
});

This code alerts on all key presses, not only on enter. Something must be wrong. I'm using jquery 1.4 BTW and don't ask why. Can't upgrade for now.

Answer 1

Problem

you are checking if pressed key is eneter or textbox has value if any of condition is true than if condition will work

if ( e.keyCode === 13 || $('#the-button').val() ) {

---

Change it to

 if ( e.keyCode === 13) { alert("Enter Pressed"); } 

---

If you want value should not be empty than

 if ( e.keyCode === 13 && $.trim($('#the-button').val()) !== '') { alert("Enter Pressed"); } 

Answer 2

Minor changes in your code logic,

$('#quick-search-input').bind('keyup', function(e) {
  if ( e.keyCode === 13 && $('#the-button').val()!="" ) {
     alert("pressed");
  }
});

Answer 3

最好使用e.which代替jQuery文档中的e.keyCode