checking if inputs in a form are set using nodejs

This question already has an answer here:

How do I check if an object has a property in JavaScript? 22 answers

---

To get post data, you need to use body-parser.

Then you need a route handler for handling the post data.

router.post('/', function (req, res, next) {
    // if you set up body parser correctly, all your form data will be accessible in `req.body`
    console.log(req.body) ; 

    const errors = validate(req);

    if(errors.length) {
        // show errors

        return;
    }

    // do something with form data.
});

function validate(req) {
    const errors  = [];

    if (! req.body.firstName) {
        errors.push('First name is required');
    }

    // do the same for all input fields

    return errors;
}

链接地址: http://www.djcxy.com/p/27318.html

上一篇: typeof undefined。 哪个更快更好？

下一篇: 检查表单中的输入是否使用nodejs设置