如何使用JavaScript以单词开头的所有cookie？

Question

我如何获得一个包含所有以开头的cookie名称的数组word？

Answer 1

完全实用的方法：

document.cookie.split(';').filter(function(c) {
    return c.trim().indexOf('word') === 0;
}).map(function(c) {
    return c.trim();
});

附带说明：

//Get a list of all cookies as a semicolon+space-separated string
document.cookie.split(';')
//Filter determines if an element should remain in the array.  Here we check if a search string appears at the beginning of the string
.filter(function(c) {
    return c.trim().indexOf('word') === 0;
})
//Map applies a modifier to all elements in an array, here we trim spaces on both sides of the string
.map(function(c) {
    return c.trim();
});

ES6：

document.cookie.split(';')
    .filter(c => c.startsWith('word'));