Javascript 2D数组未按预期返回结果
我有一个数组声明如下:Javascript 2D数组未按预期返回结果,javascript,arrays,Javascript,Arrays,我有一个数组声明如下: var rangeValues = [[0.001, 0.01], [0.0000001, 0.000001]]; rangeTuple = document.getElementById('rangeSelection').value; console.log(rangeTuple); selectedMinRange = rangeTuple[0]; selectedMaxRange = rangeTuple[1]; console.log(selectedMin
var rangeValues = [[0.001, 0.01], [0.0000001, 0.000001]];
rangeTuple = document.getElementById('rangeSelection').value;
console.log(rangeTuple);
selectedMinRange = rangeTuple[0];
selectedMaxRange = rangeTuple[1];
console.log(selectedMinRange + " | " + selectedMaxRange[1]);
这个数组用于填充下拉列表的值,因为我本质上需要为每个下拉列表项的值创建一个元组。我继续使用以下内容访问下拉列表的值:
var rangeValues = [[0.001, 0.01], [0.0000001, 0.000001]];
rangeTuple = document.getElementById('rangeSelection').value;
console.log(rangeTuple);
selectedMinRange = rangeTuple[0];
selectedMaxRange = rangeTuple[1];
console.log(selectedMinRange + " | " + selectedMaxRange[1]);
我收到以下输出:
0.001,0.01
0 | .
在我的理解中(尽管受限于JS:),rangeTuple
应该是一个包含两项的数组。记录rangeTuple
时,它看起来是正确的。但是,当我尝试将此元组中的项分配给一对全局变量时,这些值不是我期望的值
感谢您的帮助,输入的值始终是字符串。您将需要拆分该字符串,以便以您想要的方式使用它:
rangeTuple = document.getElementById('rangeSelection').value;
console.log(rangeTuple);
// split it
rangeTuple = rangeTuple.split(",");
selectedMinRange = rangeTuple[0];
selectedMaxRange = rangeTuple[1];
console.log(selectedMinRange + " | " + selectedMaxRange);
你期望的价值是什么?你得到了什么值?+1。是的,DOM不会将JavaScript对象作为原始对象“保存”给您。