javascript - how to can validate when click button user with js, this my code -

html

<p><span>a</span><input type="button" value="verdadero" id="v" onclick="verdad()"></p> <p><span>b</span><input type="button" value="falso" id="f" onclick="verdad()"></p> 

javascript

function verdad() {     var ver = document.getelementbyid('v');     var fal = document.getelementbyid('f');      if (ver == 'v' || fal == 'f' ) {         alert('correcto');         return true;         } else {         alert('falso');         return false;     }  } 

if understand asking...

html

<p><span>a</span><input type="button" value="verdadero" id="v" onclick="verdad(this)"></p> <p><span>b</span><input type="button" value="falso" id="f" onclick="verdad(this)"></p> 

javascript

function verdad(elem) {     var ver = document.getelementbyid('v');     var fal = document.getelementbyid('f');      if (ver == elem || fal == elem ) {         alert('correcto');         return true;         } else {         alert('falso');         return false;     } } 

...however, seems may wanting know if verdadero or falso clicked. if case, make more since...

html

<p><span>a</span><input type="button" value="verdadero" id="v" onclick="verdad(true)"></p> <p><span>b</span><input type="button" value="falso" id="f" onclick="verdad(false)"></p> 

javascript

function verdad(val) {     if (val) {         alert('correcto');         return true;         } else {         alert('falso');         return false;     } }