Form validation; Get all "input type=text" and validate?

Question

Use document.querySelectorAll("input[type=text]") to get the array with all inputs of type "text". You need to iterate through them and validate.

Also note that you will probably want to use something like #container_id input[type=text] to make sure you won't get any nodes that you don't need.

Here is a sample of how your validation should look:

var nodes = document.querySelectorAll("#container_id input[type=text]");
for (var i=0; i<nodes.length; i++)
    if (nodes[i].value == "" || !/[0-9.]+/.test(nodes[i].value))
        return "invalid.";
return "valid";

Something like that:

var inp = document.getElementsByTagName('input');
for(var i in inp){
    if(inp[i].type == "text"){
        if(!/^\d{1,}$/.test(inp[i].value)){
            alert('Invalid value detected');
            inp[i].focus();
            break;
        }
    }
}