Question

我有一个名为cookie的javascript字符串，它看起来像是：

__utma=43024181.320516738.1346827407.1349695412.1349761990.10; __utmz=43024181.1346827407.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); __utmb=43024181.19.10.1349761990; __utmc=43024181; language=en

它可能有更多; xxxxxx;但总是条目被包围;。现在我想将我的var拆分成一个数组并搜索条目“language = xy”，这个条目应保存在“newCookie”中。

任何人都可以帮助我，但我完全不知道将var拆分成数组并搜索条目。

感谢您的帮助和分享

Answer 1

var cookie = '__utma=43024181.320516738.1346827407.1349695412.1349761990.10; __utmz=43024181.1346827407.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); __utmb=43024181.19.10.1349761990; __utmc=43024181; language=en;';

var cookie_array = cookie.split(';'); // Create an Array of all cookie values.

// cookie_array[0] = '__utma=43024181.320516738.1346827407.1349695412.1349761990.10'
// cookie_array[1] = '__utmz=43024181.1346827407.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)'
// cookie_array[2] = '__utmb=43024181.19.10.1349761990'
// cookie_array[3] = '__utmc=43024181'
// cookie_array[4] = 'language=en'

var size = cookie_array.length; // Get Array size to prevent doing lookups in a loop.

for (var i = 0; i < size; i++) {
    var keyval = cookie_array[i].split('='); // Split into a key value array

    // What we're trying to find now.
    // keyval[0] = 'language'
    // keyval[1] = 'en'

    if (keyval[0] == 'language') { //keyval[0] is left of the '='
        //write new cookie value here
        console.log('Language is set to ' + keyval[1]);  // keyval[1] is right side of '='
    }
}

希望这有助于你。

有关split()方法的详情，请查看split() Mozilla Developer Network (MDN) documentation

Answer 2

使用简单的正则表达式：

var getLanguage = function(cookie){
    var re = new RegExp(/language=([a-zA-Z]+);/);
    var m = re.exec(cookie);
    return m?m[1]:null;
};

var lang = getLanguage('__utma=43024181.320516738.1346827407.1349695412.1349761990.10; __utmz=43024181.1346827407.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); __utmb=43024181.19.10.1349761990; __utmc=43024181; language=en;'); 
// lang = "en"

拆分Javascript字符串

2 个答案: