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Code Issues Projects Releases Wiki Activity

Better localStorage detection

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This commit is contained in:
Wes Cossick 2016-03-14 20:59:16 -05:00
parent d77d4b318b
commit 26391efa26
1 changed files with 18 additions and 2 deletions
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20
src/js/simplemde.js
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@ -1510,8 +1510,24 @@ SimpleMDE.prototype.render = function(el) {
this._rendered = this.element;
};
// Safari, in Private Browsing Mode, looks like it supports localStorage but all calls to setItem throw QuotaExceededError. We're going to detect this and set a variable accordingly.
function isLocalStorageAvailable() {
if(typeof localStorage === "object") {
try {
localStorage.setItem("smde_localStorage", 1);
localStorage.removeItem("smde_localStorage");
} catch (e) {
return false;
}
} else {
return false;
}
return true;
}
SimpleMDE.prototype.autosave = function() {
if(localStorage) {
if(isLocalStorageAvailable()) {
var simplemde = this;
if(this.options.autosave.uniqueId == undefined || this.options.autosave.uniqueId == "") {
@ -1564,7 +1580,7 @@ SimpleMDE.prototype.autosave = function() {
};
SimpleMDE.prototype.clearAutosavedValue = function() {
if(localStorage) {
if(isLocalStorageAvailable()) {
if(this.options.autosave == undefined || this.options.autosave.uniqueId == undefined || this.options.autosave.uniqueId == "") {
console.log("SimpleMDE: You must set a uniqueId to clear the autosave value");
return;