Chaining Promises

September 17, 2018Uncategorizedadmin

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function getDataFromURL(url) {   return new Promise(function(resolve, reject){     setTimeout(function() {       console.log('data received from: ' + url);       resolve(url);     }, 2000);   }); }   getDataFromURL("www.giggle.com") .then(function(msg){   return getDataFromURL("1s time: " + msg); }).then(function(script){   return getDataFromURL("2nd time: " + script); });

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console.log('enter script');   function queryBasicData(url) {     console.log("queryBasicData - querying endpoint: " + url + " √");     return new Promise(function(resolve, reject) {         setTimeout(function() {             console.log("√ Success! Basic Data received!");             resolve(2);         }, 2000);     }); }       function queryAdvancedData(url) {         console.log("queryAdvancedData - querying endpoint: " + url + " √");         return new Promise(function(resolve, reject) {             setTimeout(function() {                 console.log("√ Success! Advanced Data received!");                 resolve(6);             }, 2000);         });     }       function double(x) {         return 2 * x;     }          queryBasicData("bin/rtsao/secrets/basic")     .then(function(result){         console.log("result: "+result);         return queryAdvancedData("bin/rtsao/secrets/advanced");     }).then(function(result){         console.log("result: "+result);         return result;     }).then(function(result){         return double(result);     }).then(function(result){         console.log('final reuslt is: ' + result);     })