JSFiddle - React, Tailwind, and code Playground

by maremp

HTML

<input type="text" id="tb_login" />
<input type="password" id="tb_pwd" />
<button onclick="return log();">test</button>

JavaScript

function log() {
    var x = document.getElementById("tb_login").value;
    if (x == null || x.trim() == "") {
        alert("please type login");
        return false;
    }
    var z = document.getElementById("tb_pwd").value;
    if (z == null || z.trim() == "") {
        alert("please type pass");
        return false;
        
    }
}