If I want to get a value from the object know but the case is different, it won’t match: "Hello" won’t match "hello". Is there another work around for this?
function ct(e) {
var know = {
"Hi": "Hello",
"How are you?": "Great",
"Bye": "Have A Nice Day !",
"Hello": "Hi , Whats Up",
"What's your name?": "Claire Rachael"
};
let t = document.createElement("span");
t.setAttribute("class", "chatMessage left");
if (e in know) {
setTimeout(() => {
t.textContent = "Typing...";
d.appendChild(t);
g = d.getAttribute("data-bottom")
? d.getAttribute("data-bottom")
: 0;
if (parseInt(g) < 200)
d.scrollTo(0, d.scrollHeight);
}, 2000);
setTimeout(() => {
t.textContent = know[e];
d.appendChild(t);
g = d.getAttribute("data-bottom")
? d.getAttribute("data-bottom")
: 0;
if (parseInt(g) < 200)
d.scrollTo(0, d.scrollHeight);
else
alert("new message");
}, 6000)
}
else {
t.textContent = "I don't understand";
d.appendChild(t);
}
}
You can't do that with in, no.
You can create a map of the properties keyed by their name in lower case, then look in that map using only lower-case values:
const knowMap = new Map(Object.entries(know).map(([key, value]) => [key.toLowerCase(), value]));
const elower = e.toLowerCase();
// ...
if (knowMap.has(elower)) {
// ...you can use `knowMap.get(elower)` here to get the value...
// ...e.g.: `t.textContent = knowMap.get(elower);`
}
Live Example:
var know = {
"Hi": "Hello",
"How are you?": "Great",
"Bye": "Have A Nice Day !",
"Hello": "Hi , Whats Up",
"What's your name?": "Claire Rachael"
};
const knowMap = new Map(Object.entries(know).map(([key, value]) => [key.toLowerCase(), value]));
// ...
function test(key) {
const keylower = key.toLowerCase();
if (knowMap.has(keylower)) {
const value = knowMap.get(keylower);
console.log(`value for "${key}" is "${value}"`);
} else {
console.log(`No match for key "${key}"`);
}
}
test("Hi");
test("HI");
test("hi");If you know that none of your properties has the value undefined, you can avoid going to the map twice:
const value = knowMap.get(elower);
if (value !== undefined) {
// ...use `value` here...
}
Live Example:
var know = {
"Hi": "Hello",
"How are you?": "Great",
"Bye": "Have A Nice Day !",
"Hello": "Hi , Whats Up",
"What's your name?": "Claire Rachael"
};
const knowMap = new Map(Object.entries(know).map(([key, value]) => [key.toLowerCase(), value]));
// ...
function test(key) {
const value = knowMap.get(key.toLowerCase());
if (value !== undefined) {
console.log(`value for "${key}" is "${value}"`);
} else {
console.log(`No match for key "${key}"`);
}
}
test("Hi");
test("HI");
test("hi");