原生js(获取api)

document.onload = (() => { alert('ok'); let keyListener = document.querySelector('#searchUser'); // keyListener.addEventListener('keypress', (e) => { if(e.keyCode === 13){ let username = e.target.value; console.log(`username = ${username}`); fetch(`https://api.github.com/users/${username}`,{ data: { client_id: 'xxx', client_secret: 'xxx' } }) .then((user)=>{ console.log(`user = ${user}`); }); fetch(`https://api.github.com/users/${username}/repos`,{ data: { client_id: 'xxx', client_secret: 'xxx' } }) .then((repos)=>{ console.log(`repos = ${repos}`); for (let i = 0; i < repos.length; i++) { console.log(`repos ${i} = ${repos[i]}`); } }); }else{ console.log(`e.keyCode = ${e.keyCode}`); } }); })(); <input _ngcontent-inf-0="" class="form-control" id="searchUser" placeholder="Github username..." type="text">

重写表单的onsubmit动作，调用你的函数，并在后面添加return false，即:

<form onsubmit="javascript:myfunc();return false;" >

使用两个事件。which和event.keyCode:

function (event) {
    if (event.which == 13 || event.keyCode == 13) {
        //code to execute here
        return false;
    }
    return true;
};

跨浏览器解决方案

一些旧的浏览器以非标准的方式实现keydown事件。

KeyBoardEvent。Key是在现代浏览器中应该实现的方式。

哪一个 和keyCode现在已经被弃用了，但检查这些事件并没有什么害处，这样代码就可以为仍然使用IE等旧浏览器的用户工作。

isKeyPressed函数检查按下的键是否为enter, event.preventDefault()会阻止表单提交。

  if (isKeyPressed(event, 'Enter', 13)) {
    event.preventDefault();
    console.log('enter was pressed and is prevented');
  }

最小工作示例

JS

function isKeyPressed(event, expectedKey, expectedCode) {
  const code = event.which || event.keyCode;

  if (expectedKey === event.key || code === expectedCode) {
    return true;
  }
  return false;
}

document.getElementById('myInput').addEventListener('keydown', function(event) {
  if (isKeyPressed(event, 'Enter', 13)) {
    event.preventDefault();
    console.log('enter was pressed and is prevented');
  }
});

HTML

<form>
  <input id="myInput">
</form>

https://jsfiddle.net/tobiobeck/z13dh5r2/

如果你正在使用jQuery:

$('input[type=text]').on('keydown', function(e) {
    if (e.which == 13) {
        e.preventDefault();
    }
});

<form id="form1" runat="server" onkeypress="return event.keyCode != 13;">

在HTML页面中添加此代码…它会使……输入按钮. .