[英]TypeError: validation is not a function in react.js
我正在嘗試驗證我的表單,但總是出現相同的錯誤,這是表單的代碼:
import React from "react";
import zxcvbn from "zxcvbn";
import logo from "../images/milinus.png";
import useForm from "./useForm";
function Signup() {
//function for validation of the submited data from the form
const validation = (values) => {
let errors = {};
//name validion
if (!values.name.trim()) {
errors.name = "Name is required";
}
//last name validtion
if (!values.lastname.trim()) {
errors.lastname = "Username is required";
}
//email validtion
if (!values.email.trim()) {
errors.email = "Email is required";
} else if (!/\S+@\S+\.\S+/.test(values.email)) {
errors.email = "Email is invalid";
}
//password validtion
if (!values.pass.trim()) {
errors.pass = "pass is required";
} else if (values.pass < 8) {
errors.pass = "PassWord need to be 8 characters or more";
}
//pass_conf
if (!values.pass_conf.trim()) {
errors.pass_conf = "pass_conf is required";
} else if (values.pass_conf == !values.pass) {
errors.pass_conf = "pass_conf is not match the Password";
}
return errors;
}
//custom hook for the form
const { hadleChange, values, handleSubmit, errors } = useForm(validation);
//function that conforme and indicaite the score of the pass word
const confirm_ps = (e) => {
const weak = document.querySelector(".weak");
const muduim = document.querySelector(".muduim");
const strong = document.querySelector(".strong");
const indicater = document.querySelector(".indicater");
let test = zxcvbn(e.target.value);
weak.setAttribute("style", "background-color:white");
muduim.setAttribute("style", "background-color:white");
strong.setAttribute("style", "background-color:white");
indicater.innerHTML = "";
console.log(test.score);
if (test.score === 0 || test.score === 1) {
if (e.target.value == !null) {
weak.setAttribute("style", "background-color:white");
muduim.setAttribute("style", "background-color:white");
strong.setAttribute("style", "background-color:white");
indicater.innerHTML = "";
}
console.log(e.target.value);
weak.setAttribute("style", "background-color:red");
indicater.innerHTML = "Weak";
} else if (test.score === 2 || test.score === 3) {
weak.setAttribute("style", "background-color:yellow");
muduim.setAttribute("style", "background-color:yellow");
indicater.innerHTML = "Meduim";
} else if (test.score === 4) {
weak.setAttribute("style", "background-color:green");
muduim.setAttribute("style", "background-color:green");
strong.setAttribute("style", "background-color:green");
indicater.innerHTML = "Strong";
}
};
return (
<div className="signup">
<div className="logo">
<img src={logo} alt="logo" />
<p>CREER UN COMPTE</p>
</div>
<div className="inputs">
<form className="form" onSubmit={handleSubmit}>
<div className="form-input">
<input
type="text"
name="name"
id="name"
placeholder="Nom"
value={values.name}
onChange={hadleChange}
/>
<p className="errorname">{errors.name}</p>
</div>
<div className="form-input ">
<input
type="text"
name="lastname"
id="lastname"
placeholder="Prenom"
value={values.lastname}
onChange={hadleChange}
/>
<p className="errorlastname"></p>
</div>
<div className="form-input">
<input
type="text"
id="username"
name="username"
placeholder="Username"
value={values.username}
onChange={hadleChange}
/>
<p className="errorusername"></p>
</div>
<div className="form-input">
<input
type="text"
id="email"
name="email"
placeholder="Email"
value={values.email}
onChange={hadleChange}
/>
<p className="erroremail"></p>
</div>
<div className="form-input">
<input
type="password"
id="pass"
name="pass"
placeholder="Mote de pass"
onChange={confirm_ps}
/>
<p className="errorpassword"></p>
</div>
<div className="form-input">
<input
type="password"
id="pass_conf"
className="conform"
name="pass_conf"
placeholder="conform le mote de pass"
value={values.pass_conf}
onChange={hadleChange}
/>
<p className="errorpass_conf"></p>
</div>
<div className="progress">
<span className="weak"></span>
<span className="muduim"></span>
<span className="strong"></span>
</div>
<div className="indicater"></div>
<div className="wornings">
<ul>
<li>Letters majuscule et minuscule</li>
<li>Plus de 8 characters</li>
<li>Contiens au moin un chiffers ou symbol</li>
</ul>
</div>
<button type="submite" className="signup-btn">
S'INSCRIRE AND ACCEPTER
</button>
</form>
</div>
</div>
);
}
export default Signup;
這是自定義掛鈎的代碼:
import { useState, useEffect } from "react";
const useForm = (callback,validation) => {
const { values, setValues } = useState({
name: "",
lastname: "",
username: "",
email: "",
pass: "",
pass_conf: "",
});
const [errors, setErrors] = useState({});
const [isSubmitting, setIsSubmitting] = useState(false);
const handleChange = (e) => {
const { name, value } = e.target;
setValues({
...values,
[name]: value,
});
};
const handleSubmit = (e) => {
e.preventDefault();
setErrors(validation(values));
setIsSubmitting(true);
};
useEffect(() => {
if (Object.keys(errors).length === 0 && isSubmitting) {
callback();
}
}, [errors]);
return { handleChange, handleSubmit, values, errors };
};
export default useForm;
當我點擊提交按鈕時,出現以下錯誤:TypeError: validation is not a function
22 | 23 | const handleSubmit = (e) => { 24 | e.preventDefault();
25 | 設置錯誤(驗證(值)); | ^ 26 | setIsSubmitting(真); 27 | };
您正在為掛鈎設置兩個參數 - 回調 function 和驗證 function,並且您僅通過驗證 function
useForm(validation)
請先傳遞回調 function,然后傳遞驗證 function
您的useForm
收到兩個參數,您只在回調中給它一個參數
const useForm = (callback,validation)
結果這里報錯:
setErrors(validation(values));
因為您只傳遞callback
,而不傳遞驗證。 您需要 decalre callBack
並將其傳遞給useForm
const callBack = () => {...};
useForm(callBack, validation);
我覺得你的邏輯有點不清楚。
const { hadleChange, values, handleSubmit, errors } = useForm(validation);
不管怎樣,你在這里通過了validation
作為callback
。
如何改變它如下。
const useForm = (validation, callback) => {
要使用回調,您可以在此處定義回調。
const { hadleChange, values, handleSubmit, errors } = useForm(validation, function() {... callback here});
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