使用INDEX添加到数组或对象

Question

how can i generate array or object with own index?

in php i can:

$array = array();

foreach($users as $user){
   $array[$user] = $user;
} 

and in jQuery?

var arr = new Array();
$('input').each(function(){
   arr[$(this).val()] = $(this).val();
})

i would like use JS Object for this, but how?

Answer 1

var arr = {};
$('input').each(function(){
    ...

That's all you need. In JavaScript, arrays ( new Array() or [] ) have consecutive indexes while objects ( new Object() or {} ) have arbitrary properties.

Answer 2

this is originally not possible via arrays in but there is a way through which u can achieve it with JS objects

var person = { country: 'Pakistan' };

now this is an object U will see that both these statements gives same result.

alert( person.country );
alert( person['country'] );

Now this means actually it is object, but it also acts like array.

Answer 3

Just use an object instead of an array:

var obj = {};
$('input').each(function() {
    obj[$(this).val()] = $(this).val();
})

Answer 4

var obj = {};
$('input').each(function(){
   obj[$(this).val()] = $(this).val();
});

It's basically this simple. After this, you can access them either by obj[value] or obj.value .

Answer 5

使用对象而不是数组

var arr = {};