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Bitcoin Forum > Bitcoin > Development & Technical Discussion (Moderators: gmaxwell, achow101) > Check address balance with JavaScript?
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JetRX
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August 15, 2015, 05:53:19 PM
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How to do it?
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hexafraction
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August 15, 2015, 11:36:05 PM
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Both blockchain.info and blockr.io have APIs you can use for this purpose. You can load https://blockchain.info/address/{ADDRESS HERE}?format=json or http://btc.blockr.io/api/v1/address/info/{ADDRESS HERE} using AJAX and parse the JSON.
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Kazimir
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August 16, 2015, 05:01:50 AM
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Quote from: hexafraction on August 15, 2015, 11:36:05 PM
Both blockchain.info and blockr.io have APIs you can use for this purpose. You can load https://blockchain.info/address/{ADDRESS HERE}?format=json or http://btc.blockr.io/api/v1/address/info/{ADDRESS HERE} using AJAX and parse the JSON.
Ajax doesn't allow you to make requests to another domain. So if your site is on example.com, your javascript can't query an external URL like btc.blockr.io.
In theory, there's no difference between theory and practice. In practice, there is.
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luisan00
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August 16, 2015, 09:50:36 AM
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Ajax doesn't allow you to make requests to another domain. So if your site is on example.com, your javascript can't query an external URL like btc.blockr.io.
What?? Huh Huh
Today, cross domain Ajax request is supported for major browsers.
You can use several resources for a request cross domain , for example: JSONP, OpenAjax Hub, easyXDM, etc, also proxified petitions can help, or simply type in google CORS, cross domain, etc etc.
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