JS: Associative array access over variable?
after progging php since 3 years, im hanging at javascript. Is it possible to get value of an assoziative array with a variable? Example:
var a = new Array();
a["ANDI"] = "USER";
var test = "ANDI";
alert(a[test]);
Any suggestions, how 开发者_如何转开发I could workaround that? Maybe with objects?
Thx for help!
Arrays are indexed by numbers. Objects have properties that can be accessed by name.
var myContainer = {
'User': 'Andy'
};
var key = 'User';
myContainer[key]; // Returns 'Andy'.
Yup. That should alert USER.
But JavaScript has objects. If you want to do that, you'd probably want..
var a = {
"ANDI": "USER"
};
For more details of JavaScript's object notations, check out JSON.org.
Sure, the code you have shown works perfectly fine and prints USER
as expected. Live demo: http://jsfiddle.net/htnPe/
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