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<!DOCTYPE html>
<html lang="en">
<head>
<title>Storage test</title>
</head>
<body>
<h1>Storage test</h1>
<p>
<h2>Local Storage</h2>
<label>Key: </label><input type="text" size="30" id="localStorageKey" />
<label>Value: </label><input type="text" size="30" id="localStorageValue" />
<br>
<br>
<input type="button" id="addLS" value="Add" />
<input type="button" id="removeLS" value="Remove" />
<input type="button" id="getLS" value="Get" />
<p id="localStorageGetValue"></p>
</p>
<p>
<h2>Session Storage</h2>
<label>Key: </label><input type="text" size="30" id="sessionStorageKey" />
<label>Value: </label><input type="text" size="30" id="sessionStorageValue" />
<br>
<br>
<input type="button" id="addSS" value="Add" />
<input type="button" id="removeSS" value="Remove" />
<input type="button" id="getSS" value="Get" />
<p id="sessionStorageGetValue"></p>
</p>
</body>
<script>
document.getElementById('addLS').addEventListener('click', function () {
const key = getTextBoxValue("localStorageKey");
const value = getTextBoxValue("localStorageValue");
addValue('local', key, value);
});
document.getElementById('removeLS').addEventListener('click', function () {
const key = getTextBoxValue("localStorageKey");
removeValue('local', key);
});
document.getElementById('getLS').addEventListener('click', function () {
const key = getTextBoxValue("localStorageKey");
getValue('local', key, "localStorageGetValue");
});
document.getElementById('addSS').addEventListener('click', function () {
const key = getTextBoxValue("sessionStorageKey");
const value = getTextBoxValue("sessionStorageValue");
addValue('session', key, value);
});
document.getElementById('removeSS').addEventListener('click', function () {
const key = getTextBoxValue("sessionStorageKey");
removeValue('session', key);
});
document.getElementById('getSS').addEventListener('click', function () {
const key = getTextBoxValue("sessionStorageKey");
getValue('session', key, "sessionStorageGetValue");
});
function getTextBoxValue(id) {
const textBox = document.getElementById(id);
if (!textBox.value)
return "";
return textBox.value;
}
function addValue(storageType, key, value) {
if (!key)
return;
if (!value)
return;
let storage;
if (storageType === 'local')
storage = window.localStorage;
else
storage = window.sessionStorage;
storage.setItem(key, value)
}
function removeValue(storageType, key) {
if (!key)
return;
let storage;
if (storageType === 'local')
storage = window.localStorage;
else
storage = window.sessionStorage;
storage.removeItem(key)
}
function getValue(storageType, key, resultID) {
if (!key) {
document.getElementById(resultID).innerHTML = "No value found for '" + key + "'";
return;
}
let storage;
if (storageType === 'local')
storage = window.localStorage;
else
storage = window.sessionStorage;
const value = storage.getItem(key);
if (!value) {
document.getElementById(resultID).innerHTML = "No value found for '" + key + "'";
return;
}
document.getElementById(resultID).innerHTML = "Value for key '" + key + "' = " + storage.getItem(key);
}
</script>
</html>
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