html - I have a JSON Object in JavaScript and want to access a key from a String variable -


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in javascript, have json object. json object has many keys , need access 1 stored in string using dot operator not sure how this.

for example, if have following json code:

"values" : [ { "prop0" : "h",         "prop1" : "pizza",         "prop2" : "2014-06-24t15:58:50z",         "prop3" : ""       },       { "prop0" : "paa",         "prop1" : "cat",         "prop2" : "2014-06-24t15:58:16z",         "prop3" : "mouse"       }     ]

and want access prop1 use following javascript code:

values[0].prop1;

this works long know property called prop1. don't know properties called. have string represents what, in case, prop1 or whatever current property is, don't know how use dot operator string.

i like:

values[0].mystring;

but not work.

is there way trying achieve?

you can treat javascript object associative array or dictionary passing key lookup:

values[0][mystring]

in following code,

var mystring = 'prop1'; var val1 = values[0][mystring]; var val2 = values[0].prop1;

val1 , val2 both hold value of 'pizza'


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