jquery clicks the enter key to achieve login effect example sharing

When I was doing project login recently, I had to click the login button every time to enter the corresponding page, which gave the user a very bad experience, so I added the use of the Enter key to log in. This article mainly shares with you a jquery method of clicking the Enter key to achieve the login effect and default focus. It has a good reference value and I hope it will be helpful to everyone. Let’s follow the editor to take a look, I hope it can help everyone.

Method:

<form> 
<input type="text" id="username_txt" placeholder="用户名" />
<input type="password" id="userpass_txt" placeholder="密码" />
    <button id="login_btn">登录</button>
</form>
$(function () { 
$(&#39;#username_txt&#39;).focus();
    //用户点击按钮
    $("#login_btn").click(function () {
    //获取用户名
    var username = $(&#39;#username_txt&#39;).val();
    //获取密码
    var userpass = $(&#39;#userpass_txt&#39;).val();
     if (username == "" || userpass == "") { alert("用户名密码不能为空！"&#39;); }
    else {
//调用登录方法
        $.ajax({
           
 });
 }
 });
$("body").keydown(function(event) {
 if (event.keyCode == "13") {//keyCode=13是回车键
$("#login_btn").click();
 }
}); 
});

Final rendering:

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