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formData-to-server.html
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142 lines (121 loc) · 3.79 KB
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Transforming FormData</title>
<style>
#output input {
margin: 5px;
}
.radio {
display: flex;
flex-direction: column;
justify-items: center;
}
</style>
</head>
<body>
<div id="output"></div>
<script>
const output = document.getElementById("output");
output.innerHTML = `
<h1> Transforming FormData for the server
</h1>
</br>
<form name='order'>
<label>
Name: <input name="fullname" type="text" value="rakib">
</label>
</br>
<label>
Email: <input name="email" type="email" >
</label>
<label>
</br>
<label>
ID:<input name="id" type="number" >
</label>
<label>
</br>
<label>
Select Dept:
<select name="dept">
<option value="CSE">CSE</option>
<option value="EEE">EEE</option>
<option value="BBA">BBA</option>
</select>
</label>
</br>
<div class="radio">
<label>
<input
type="radio"
name="year"
id=""
value="first"
checked="checked"
/>
first year</label
>
<label>
<input
type="radio"
name="year"
id=""
value="second"
/>
second year</label
>
<label>
<input
type="radio"
name="year"
id=""
value="third"
/>
third year</label
>
<label>
<input
type="radio"
name="year"
id=""
value="fourth"
/>
fourth year</label
>
</div>
<label>
<input name="submit" type="submit">
</label>
</form>
`;
const form = document.forms.order;
function handleSubmit(event) {
event.preventDefault();
//query string approach
//content type = application/x-www-form-urlencoded
//fullname=Rakib+Rahman&[email protected]&id=111
//Method 1
const formData = new FormData(event.target);
const data = [...formData.entries()];
// console.log(data);
// const dataAsString = data.map((x) => `${x[0]}=${x[1]}`);
// const dataAsString = data
// .map((x) => `${encodeURIComponent(x[0])}=${encodeURIComponent(x[1])}`)
// .join("&");
// encodeURIComponent to remove spaces.
//Method 2
const dataAsString = new URLSearchParams(formData).toString();
console.log(dataAsString);
//JSON
const dataAsJSON = JSON.stringify(Object.fromEntries(formData));
// => pass 'formdata' to Object.fromEntries() then use JSON.stringify() to get the value
console.log(dataAsJSON);
}
form.addEventListener("submit", handleSubmit);
</script>
</body>
</html>