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j 推进关键价值
原标题:javascript push key value

我认为,我要推动对阵列的关键价值。

例如,在公共卫生和社会福利部中,情况就是如此:

$err = array();
function check($k,$v) {
  $err[$k] = $v; 
}

如何在 Java/Script文Script中做到这一点?

最佳回答
问题回答

你使用物体。 这样做也大体相同。

var $err = {};
function check($k, $v) {
     $err[$k] = $v;
}

虽然如此,但这不是一个阵列。

确实,你可以实际在瓦贾布特阵列这样做,口译员将让你来。

var $err = []; // an array
function check($k, $v) {
    $err[$k] = $v;
}

但是,你并没有真正推动阵列,而是将阵列扩大到。 你们可以这样做:

var foo = [];
foo[ hello ] =  world ;

console.log(foo);            // []
console.log(foo[ hello ]);   //  world 
console.log(foo.hello);      //  world 
console.log(foo.length);     // 0

......最好看看看看这一道:D





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