código HTML :
<input id="Degree" name="Degree" type="number" size="10"> <select id="year" name="date" onchange="jsyear(this.value);"> <option value="2000"> 2000 </option> <option value="2001"> 2001 </option> <option value="2002"> 2002 </option> <option selected> 2003 </option> <option> 2004 </option> <option> 2005 </option> </select>y el código JavaScript:
function jsyear(value) { if (value < 2003) { alert("You are too old "); } } let degreeInput = document.getElementById('Degree'); let delayTimer; degreeInput.oninput = (e) => { clearTimeout(delayTimer); delayTimer = setTimeout(() => { if (e.target.value < 73) { alert(" your degree is less than required "); } }, 1050); };quiero evitar enviarlo a menos que todas estas funciones sean verdaderas, si es falsa, entonces no puede enviarse. ayúdenme chicos por favor
Solo necesitas agregar un botón
const button = document.getElementById("submit"); const degree = document.getElementById("Degree"); const year = document.getElementById("year"); function check(){ if (year.value < 2003){ alert("You are too old"); button.disabled = true; } else if (degree.value < 73){ alert("Your degree is less than required"); button.disabled = true; } else { button.disabled = false; } } degree.onchange = check; year.onchange = check; <form id="myform" action="#"> <input id="Degree" name="Degree" type="number" size="10"> <select id="year" name="date"> <option value="2000"> 2000 </option> <option value="2001"> 2001 </option> <option value="2002"> 2002 </option> <option selected> 2003 </option> <option> 2004 </option> <option> 2005 </option> </select> <input type="submit" id="submit" value="Check" disabled> </form>