yelp-api-search.js

// Add script tag to src="https://raw.githubusercontent.com/bettiolo/oauth-signature-js/master/dist/oauth-signature.min.js"
// to get oauthSignature function on window (global)

function randomString(length, chars) {
    var result = '';
    for (var i = length; i > 0; --i) result += chars[Math.round(Math.random() * (chars.length - 1))];
    return result;
}

function jsonp(url, callback) {
    var callbackName = 'jsonp_callback_' + Math.round(100000 * Math.random());
    window[callbackName] = function(data) {
        delete window[callbackName];
        document.body.removeChild(script);
        callback(data);
    };

    var script = document.createElement('script');
    script.src = url + (url.indexOf('?') >= 0 ? '&' : '?') + 'callback=' + callbackName;
    document.body.appendChild(script);
}

function toQueryString(json) {
    return '?' + 
        Object.keys(json).map(function(key) {
            return encodeURIComponent(key) + '=' +
                encodeURIComponent(json[key]);
        }).join('&');
}

function yelpSearch(callback) {
    var method = 'GET';
    var url = 'http://api.yelp.com/v2/search';
    var params = {
        callback: 'angular.callbacks._0',
        location: 'San+Francisc',
        oauth_consumer_key: '', // CONSUMER KEY HERE
        oauth_token: '', // TOKEN HERE
        oauth_signature_method: "HMAC-SHA1",
        oauth_timestamp: new Date().getTime(),
        oauth_nonce: randomString(32, '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'),
        term: 'food'
    };

    var consumerSecret = ''; // CONSUMER SECRET HERE
    var tokenSecret = ''; // TOKEN SECRET HERE
    var signature = oauthSignature.generate(method, url, params, consumerSecret, tokenSecret, { encodeSignature: false});
    
    params.oauth_signature = signature;    
    
    url += toQueryString(params);
    jsonp(url, callback);
}