I have this code:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="./framework.js"></script>
</head>
<body>
<p f-text="name"></p>
<script>
Framework.store('name', 'Joe');
</script>
</body>
</html>
document.querySelectorAll('*').forEach((element) => {
if (element.hasAttribute('f-text')) {
const textValue = element.getAttribute('f-text');
element.innerHTML = window.fStore[textValue];
}
});
window.Framework = {
store: (key, value = '') => {
if (value === '') {
return window.fStore[key];
}
window.fStore[key] = value;
}
}
But get this error:
TypeError: Cannot set properties of undefined (setting 'name')
at Object.store (/framework.js:15:24)
at /:12:15
I want the page to render 'Joe' by getting the key from f-text, finding the key's value in window.fStore, then setting the element.innerHTML as the value. Framework.store() takes a key and a value, if there is no value it returns the value from the key in window.fStore, if there is then it sets window.fStore[key] to the value.
You need to check whether window.fStore exists first.
window.Framework = {
store: (key, value = '') => {
if(!window.fStore) window.fStore = {}
if (value === '') {
return window.fStore[key];
}
window.fStore[key] = value;
}
}
Framework.store('name', 'Joe');
document.querySelectorAll('*').forEach((element) => {
if (element.hasAttribute('f-text')) {
const textValue = element.getAttribute('f-text');
element.innerHTML = window.fStore[textValue];
}
});<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<p f-text="name"></p>
</body>
</html>You might also need to wait till the window loads first. Some browsers will give you a headache if you dont
window.addEventListener('load', e=>{
window.Framework = {
store: (key, value = '') => {
if(!window.fStore)
window.fStore = {};
if (value === '')
return window.fStore[key];
window.fStore[key] = value;
}
}
window.Framework.store('name', 'Joe');
document.querySelectorAll('*').forEach((element) => {
if (element.hasAttribute('f-text'))
element.innerHTML = window.fStore[element.getAttribute('f-text')];
});
}