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The difference between value types and reference types

巴扎黑
巴扎黑Original
2016-12-19 14:24:001109browse

<script type="text/javascript">
var i = 1;
var j = 2;
var a = [1, 2];
function arr(b) {
  b[0] = 2;
}
function me(x, y) {
 x = x+y;
return x;
}
arr(a);
console.log(i); // 1
console.log(JSON.stringify(a)); // [2,2]
</script>

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