javascript - 从混合字符数组中仅检索整数值

Question

当我尝试从下面的数组中仅检索数值时，出现错误“无法读取未定义的属性‘toString’”。虽然我看到输出正确给出，但我收到此错误并且代码失败。

 var array=['~ 9    view passages','~ 17    view passages','~ 1    view passages','~ 3    view passages','~ 4    view passages','~ 1    view passages'];
    for (var i=0;i<=array.length;i++){
    var Arraystring=array[i].toString();
    var temp1 = Arraystring.replace("    view passages","");
    var temp2 = temp1.replace("~","");
    var temp3=parseInt(temp2);
    console.log("String converted Array "+Arraystring);
    console.log("Stripped Array "+temp2);
    console.log("Integer Array "+temp3);
    }

错误: 无法读取未定义的属性“toString”

Answer 1

您应该使用< array.length而不是<= array.length .

当前您正在解析超出范围的值，因此它无法调用 toString()功能。

试试这个方法

var array = ['~ 9    view passages', '~ 17    view passages', '~ 1    view passages', '~ 3    view passages', '~ 4    view passages', '~ 1    view passages'];
for (var i = 0; i < array.length; i++) {
    var Arraystring = array[i].toString();
    var temp1 = Arraystring.replace("    view passages", "");
    var temp2 = temp1.replace("~", "");
    var temp3 = parseInt(temp2);
    console.log("String converted Array " + Arraystring);
    console.log("Stripped Array " + temp2);
    console.log("Integer Array " + temp3);
}