1.unshift method 2.myArray.length 3.splice Method Removes elements from an array and, if necessary, inserts new elements in their place, returning the deleted elements.
好象javascript里,你只要对一个数组元素赋值,就可以了,数租长度是自动改的 长度的改变反映倒length属性里 动态删除,我觉得重写倒没那么夸张,但是要通过一定的算法实现<script> var a = new Array(); a[0] = 1; alert(a.length); a[1] = 2; alert(a.length); a[3] = 2; alert(a.length);function del(){ for (var i=start;i<a.length;i++) { a[i-1] = a[i]; }; a[i] = null; } </script>del()里删除的是第start-1个元素
2.myArray.length
3.splice Method
Removes elements from an array and, if necessary, inserts new elements in their place, returning the deleted elements.
长度的改变反映倒length属性里
动态删除,我觉得重写倒没那么夸张,但是要通过一定的算法实现<script>
var a = new Array();
a[0] = 1;
alert(a.length);
a[1] = 2;
alert(a.length);
a[3] = 2;
alert(a.length);function del(){
for (var i=start;i<a.length;i++)
{
a[i-1] = a[i];
};
a[i] = null;
}
</script>del()里删除的是第start-1个元素