XMLHttpRequest in the browser
0
$begingroup$
The intention is to implement an xmlHttpRequest in plain vanilla js while considering all possible errors and problem situations without crashing in the browser. Result and faults are to be properly communicated back to the caller.
function get() {
return new Promise(function(resolve, reject){
var xmlHttpRequest = new XMLHttpRequest();
xmlHttpRequest.open("GET", "http://localhost/products", true);
xmlHttpRequest.onreadystatechange = function() {
if (xmlHttpRequest.readyState === 4) {
try {
var data = JSON.parse(xmlHttpRequest.response);
} catch (error) { // in case parser error
reject(error);
return;
}
if(xmlHttpRequest.status === 200) {
resolve(data);
} else {
reject(data);
}
}
};
xmlHttpRequest.addEventListener("error", function(error){
reject(error);
});
xmlHttpRequest.send();
});
}
javascript
asked 6 mins ago
DeveloperDeveloper
33
$endgroup$
add a comment |
0
$begingroup$
The intention is to implement an xmlHttpRequest in plain vanilla js while considering all possible errors and problem situations without crashing in the browser. Result and faults are to be properly communicated back to the caller.
function get() {
return new Promise(function(resolve, reject){
var xmlHttpRequest = new XMLHttpRequest();
xmlHttpRequest.open("GET", "http://localhost/products", true);
xmlHttpRequest.onreadystatechange = function() {
if (xmlHttpRequest.readyState === 4) {
try {
var data = JSON.parse(xmlHttpRequest.response);
} catch (error) { // in case parser error
reject(error);
return;
}
if(xmlHttpRequest.status === 200) {
resolve(data);
} else {
reject(data);
}
}
};
xmlHttpRequest.addEventListener("error", function(error){
reject(error);
});
xmlHttpRequest.send();
});
}
javascript
asked 6 mins ago
DeveloperDeveloper
33
$endgroup$
$begingroup$
I'd also like to mention that there's a status 0 condition, it happens when browser is offline, that means no json response etc.
$endgroup$
– Developer
1 min ago
add a comment |
0
0
0
$begingroup$
The intention is to implement an xmlHttpRequest in plain vanilla js while considering all possible errors and problem situations without crashing in the browser. Result and faults are to be properly communicated back to the caller.
function get() {
return new Promise(function(resolve, reject){
var xmlHttpRequest = new XMLHttpRequest();
xmlHttpRequest.open("GET", "http://localhost/products", true);
xmlHttpRequest.onreadystatechange = function() {
if (xmlHttpRequest.readyState === 4) {
try {
var data = JSON.parse(xmlHttpRequest.response);
} catch (error) { // in case parser error
reject(error);
return;
}
if(xmlHttpRequest.status === 200) {
resolve(data);
} else {
reject(data);
}
}
};
xmlHttpRequest.addEventListener("error", function(error){
reject(error);
});
xmlHttpRequest.send();
});
}
javascript
asked 6 mins ago
DeveloperDeveloper
33
$endgroup$
The intention is to implement an xmlHttpRequest in plain vanilla js while considering all possible errors and problem situations without crashing in the browser. Result and faults are to be properly communicated back to the caller.
function get() {
return new Promise(function(resolve, reject){
var xmlHttpRequest = new XMLHttpRequest();
xmlHttpRequest.open("GET", "http://localhost/products", true);
xmlHttpRequest.onreadystatechange = function() {
if (xmlHttpRequest.readyState === 4) {
try {
var data = JSON.parse(xmlHttpRequest.response);
} catch (error) { // in case parser error
reject(error);
return;
}
if(xmlHttpRequest.status === 200) {
resolve(data);
} else {
reject(data);
}
}
};
xmlHttpRequest.addEventListener("error", function(error){
reject(error);
});
xmlHttpRequest.send();
});
}
javascript
javascript
asked 6 mins ago
DeveloperDeveloper
33
asked 6 mins ago
DeveloperDeveloper
33
asked 6 mins ago
DeveloperDeveloper
33
asked 6 mins ago
DeveloperDeveloper
33
asked 6 mins ago
DeveloperDeveloper
33
33
$begingroup$
I'd also like to mention that there's a status 0 condition, it happens when browser is offline, that means no json response etc.
$endgroup$
– Developer
1 min ago
add a comment |
$begingroup$
I'd also like to mention that there's a status 0 condition, it happens when browser is offline, that means no json response etc.
$endgroup$
– Developer
1 min ago
$begingroup$
I'd also like to mention that there's a status 0 condition, it happens when browser is offline, that means no json response etc.
$endgroup$
– Developer
1 min ago
$begingroup$
I'd also like to mention that there's a status 0 condition, it happens when browser is offline, that means no json response etc.
$endgroup$
– Developer
1 min ago
add a comment |
0
active
oldest
votes
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$begingroup$
I'd also like to mention that there's a status 0 condition, it happens when browser is offline, that means no json response etc.
$endgroup$
– Developer
1 min ago