JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" id="go" />
<input type="text" id="go2" />

JavaScript

var formBean = {
                "formString": "Demo",
                "formFields":[
                    {
                        "name":"go",
                        "id":"go",
                        "validationString":"myTest"
                    },
                    {
                        "name":"go2",
                        "id":"go2",
                        "validationString":"myTest2"
                    }
                ]
 };

window.onload = function()
{

    for(var i=0;i<formBean.formFields.length;i++) {
        var field = formBean.formFields[i];
        var fieldMethod = field.name + "Handle";
                        
        document.getElementById(field.id).onblur = function() {
            alert(fieldMethod);
        };        
    
    }
    
}