How to Iterate key value pairs in a string

Question

I have a string like this: var test = "oldsite1: newsite1, oldsite2: newsite2";

I want to iterate over this to get the values. I know I can convert to a string array like this: var myArray = test.split(",");

but then I get the whole of the string up to the "," and I want to extract "oldsite1" and "newsite1".

Help appreciated. Thanks.

Answer 1

Split again each array item and get the key as the first element and the value as the second

 var test = "oldsite1: newsite1, oldsite2: newsite2"; var items= test.split(','); items.forEach(function(item) { var keyValue = item.split(":") console.log("this is the key: " + keyValue[0]); console.log("this is the value: " + keyValue[1]); })

Answer 2

I would use split to convert the string to an array and then you can use array methods to manipulate.

 var test = "oldsite1: newsite1, oldsite2: newsite2"; var split = test.split(','); split.forEach(function(item) { console.log(item); }) console.log(split) //outputs an array of key values

Answer 3

Your input format is close enough to valid JSON that I'd take it the rest of the way and then use JSON.parse to turn it into a javascript object. (Though if you can have your data in JSON in the first place, that'd be preferable...)

 var test = "oldsite1: newsite1, oldsite2: newsite2" // wrap field names in quotes, and put curlies around the whole thing: test = '{"'+ test.replace(/([:,]) /g, '"$1 "') + '"}'; var obj = JSON.parse(test); // Now you can use obj as a regular old hash table: console.log("All keys are ", Object.keys(obj)); console.log("oldsite1's value is ", obj.oldsite1); // and so on

Answer 4

You may combine split() and map() to convert your string into an array of objects:

 var test = "oldsite1: newsite1, oldsite2: newsite2"; testArr = test.split(',').map(function(ele, idx){ var arr = ele.split(':'); var retVal = {}; retVal[arr[0]] = arr[1].trim(); return retVal; }); console.log(testArr); testArr.forEach(function(ele, idx) { var keyName = Object.keys(ele)[0]; var keyValue = ele[keyName]; console.log('keyName: ' + keyName + ' keyValue: ' + keyValue); })