snippetjavascriptCritical
How to access the first property of a Javascript object?
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propertyobjecthowaccessthejavascriptfirst
Problem
Is there an elegant way to access the first property of an object...
For example, I need to access
- where you don't know the name of your properties
- without using a loop like
for .. inor jQuery's$.each
For example, I need to access
foo1 object without knowing the name of foo1:var example = {
foo1: { /* stuff1 */},
foo2: { /* stuff2 */},
foo3: { /* stuff3 */}
};Solution
var obj = { first: 'someVal' };
obj[Object.keys(obj)[0]]; //returns 'someVal'
Object.values(obj)[0]; // returns 'someVal'Using this you can access also other properties by indexes. Be aware tho!
Object.keys or Object.values return order is not guaranteed as per ECMAScript however unofficially it is by all major browsers implementations, please read https://stackoverflow.com/a/23202095 for details on this.Code Snippets
var obj = { first: 'someVal' };
obj[Object.keys(obj)[0]]; //returns 'someVal'
Object.values(obj)[0]; // returns 'someVal'Context
Stack Overflow Q#983267, score: 1953
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