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JavaScript - push to array
1 answers
3 points
How can I push new values to the following array?
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var json = { "foo": "a", "bar": "b" };I've tried:
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json.push("hello": "world");But it doesn't work.
1 answer
3 points
This is not an array.
It's an object and what you are trying to do is to add a key/value pair to the object.
You can do it in two ways:
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var object = { 'foo': 'a', 'bar': 'b' };2
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object.hello = 'world'; // adds key/value pair using dot notation4
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console.log(JSON.stringify(object)); // {"foo":"a","bar":"b","hello":"world"}or:
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var object = { 'foo': 'a', 'bar': 'b' };2
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object['hello'] = 'world'; // adds key/value pair using array notation4
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console.log(JSON.stringify(object)); // {"foo":"a","bar":"b","hello":"world"}You can also do it as an array but it requires a different syntax:
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var array = [{ 'foo': 'a' }, { 'bar': 'b' }];2
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array.push({ 'hello': 'world' });4
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console.log(JSON.stringify(array)); // [{"foo":"a"},{"bar":"b"},{"hello":"world"}]
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