JavaScript拆分，推送和加入 [英] Javascript split, push and join

问题描述

调用联接方法时为什么不添加|

    var array ="12|23|435|566|46|6|666766|24";
    var arraySplit = array.split("|");
    var newArray = [];
    for (i=0; i<arraySplit.length; i++)
    {
        if (arraySplit[i] < 500)
        {
            newArray.push(arraySplit[i]);
        }
    }
    newArray.join("|");
    alert(newArray);

解决方案

newArray.join不会修改现有数组.它返回一个数组所有当前值的新字符串，并与您指定的字符串相连.使用以下命令将生成的数组存储在新变量中:

var joinedArray = newArray.join("|");
alert(joinedArray);

演示: http://jsfiddle.net/EH8dB/

---

参考:

• https://developer.mozilla. org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Array/join

How come the | is not added when I call the join method

    var array ="12|23|435|566|46|6|666766|24";
    var arraySplit = array.split("|");
    var newArray = [];
    for (i=0; i<arraySplit.length; i++)
    {
        if (arraySplit[i] < 500)
        {
            newArray.push(arraySplit[i]);
        }
    }
    newArray.join("|");
    alert(newArray);

解决方案

newArray.join does not modify the existing array. It returns a new string of all the array's current values, joined by the string you specify. Use the following to store the generated array in a new variable:

var joinedArray = newArray.join("|");
alert(joinedArray);

DEMO: http://jsfiddle.net/EH8dB/

---

References:

• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/join

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