Get the js code of all inputs under the form_javascript skills

Use the collection object elements of form to get value

Copy code The code is as follows:

var form = document.getElementById("dateform");
var a = form.elements.length;//Number of all controls
for (var j=0;jif (form.elements[j].className == "text"){//Control with class="text"
if(form.elements[j].value=="" || form.elements[j] .value==null){
alert("cannot be null");
form.elements[j].focus();
return false;
}
}
}