CODEWITHSUNDEEP
javascriptarrays
anjel
anjel

Reputation: 1382

javascript array query

am trying to loop and get the values of names from this array , but am not able..really frustrated with javascript

can anyone please help and guide me to do this and for more complex arrays.. i cant seem to find and tutorial good to show examples of this

thank you , here is the code

    var object={name:'angelos',name:'nick',name:'maria'};
    var i;
    for (i = 0; i < object.length; i += 1) {
        document.writeln(object[name][i]);
    }

Upvotes: 0

Views: 654

Answers (5)

lbstr
lbstr

Reputation: 2832

First of all, that is an object, not an array. You probably meant to have an array of objects. I'm saying that because you have three keys all called name. Keys must be unique. like this:

var people = [{name: 'angelos'}, {name:'nick'}, {name:'maria'}];

In that case you would loop through like this:

for (var i = 0; i < people.length; i++) {
    document.writeln(people[i].name);
}

Example: http://jsfiddle.net/lbstr/cMqaH/

Upvotes: 2

Austin
Austin

Reputation: 6034

First of all, your object has duplicate keys name. This is poor code and will throw an error in strict mode.

I would also use either a for ... in loop or Array.forEach here, because much less code is required to implement the desired effect.

Seems like you need to use an Array:

var arr = ["nick", "maria", "chaz"];

arr.forEach(function (name) {
    document.writeln(name);
});

You can use Array.forEach, which passes in each index to an anonymous function.

Alternatively, if you wanted each person to be an Object:

var people = [{name: 'chaz', title: 'mr'}, {name: 'nick', title: 'mr'}, {name: 'maria',title: 'ms'}];

for (i in people) {
    if (!people.hasOwnProperty(i)) { continue; }

    var person = people[i];
    document.writeln(person.name);
}

References

Upvotes: 3

AceCorban
AceCorban

Reputation: 2103

This is a mix between an array and JSON. If your data looked like this:

var object = [{"name":"angelos"},{"name":"nick"},{"name":"maria"}];

You'd be able to access the elements like so:

for(var i=0,i<object.length,i++)
{
    alert(object[i].name);
 }

Upvotes: 0

Robin Drexler
Robin Drexler

Reputation: 4457

You can put your data in an array and fill it with objects containing a name attribute (and others e.g. adress or so, if you like to)

http://jsfiddle.net/5NK6x/

var obj=[{name:'angelos'}, {name:'nick'}, {name:'maria'}],
    i;
for (i = 0; i < obj.length; i += 1) {
    document.write(' ' + obj[i]['name']);
}​

Upvotes: 2

bfavaretto
bfavaretto

Reputation: 71939

That's an object, not an array. You can make it a simple array instead:

var arr = ['angelos', 'nick', 'maria'];
for (var i = 0; i < arr.length; i++) {
    document.writeln(arr[i]);
}

Or, if you want to have objects inside the array (not needed if every object has just one key):

var arr = [{name: 'angelos'}, {name: 'nick'}, {name: 'maria'}];
for (var i = 0; i < arr.length; i++) {
    document.writeln(arr[i].name);
}

Upvotes: 6

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