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Code cleanup. Removed not need clone2().

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This commit is contained in:
Martin Edenhofer 2016-03-04 09:28:16 +01:00
parent d9cfcbbd34
commit 2825da2ca0
1 changed files with 8 additions and 60 deletions
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52
app/assets/javascripts/application.js
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@ -152,58 +152,6 @@ function clone(item, full) {
return result
}
// taken from http://stackoverflow.com/questions/4459928/how-to-deep-clone-in-javascript
function clone2(item) {
if (!item) { return item; } // null, undefined values check
var types = [ Number, String, Boolean ],
result;
// normalizing primitives if someone did new String('aaa'), or new Number('444');
types.forEach(function(type) {
if (item instanceof type) {
result = type( item );
}
});
if (typeof result == "undefined") {
if (Object.prototype.toString.call( item ) === "[object Array]") {
result = [];
item.forEach(function(child, index, array) {
result[index] = clone( child );
});
} else if (typeof item == "object") {
// testing that this is DOM
if (item.nodeType && typeof item.cloneNode == "function") {
var result = item.cloneNode( true );
} else if (!item.prototype) { // check that this is a literal
if (item instanceof Date) {
result = new Date(item);
} else {
// it is an object literal
result = {};
for (var i in item) {
result[i] = clone( item[i] );
}
}
} else {
// depending what you would like here,
// just keep the reference, or create new object
if (false && item.constructor) {
// would not advice to do that, reason? Read below
result = new item.constructor();
} else {
result = item;
}
}
} else {
result = item;
}
}
return result;
}
// taken from https://github.com/epeli/underscore.string/blob/master/underscored.js
function underscored (str) {
return str.trim().replace(/([a-z\d])([A-Z]+)/g, '$1_$2').replace(/[-\s]+/g, '_').toLowerCase();