javascript - 遍历数组并删除所有包含特定单词的值

Question

我有这个数组：

suggestions = [ "the dog", 
                "the cat", 
                "the boat",
                "boat engine",
                "boat motor",
                "motor oil"
              ];

如何遍历数组并删除包含特定单词的所有条目？

例如，删除所有包含单词“the”的整数，因此数组变为：

[ "boat engine",
  "boat motor",
  "motor oil"
];

Answer 1

创建一个新数组可能更容易：

var correct = [],
    len = suggestions.length,
    i = 0,
    val;

for (; i < len; ++i) {
    val = suggestions[i];
    if (val.indexOf('the') === -1) {
        correct.push(val);
    }
}

Answer 2

我会使用这个设置：

var suggestions = [
    "the dog",
    "the cat",
    "he went then",
    "boat engine",
    "another either thing",
    "some string the whatever"
];

function filterWord(arr, filter) {
    var i = arr.length, cur,
        re = new RegExp("\\b" + filter + "\\b");
    while (i--) {
        cur = arr[i];
        if (re.test(cur)) {
            arr.splice(i, 1);
        }
    }
}

filterWord(suggestions, "the");
console.log(suggestions);

演示：http: //jsfiddle.net/Kacju/

它向后循环，正确检查要查找的单词（通过使用\b标识符作为单词边界），并删除任何匹配项。

如果要生成包含匹配项的新数组，请正常循环，并且只push对新数组的任何不匹配项进行循环。你可以使用这个：

var suggestions = [
    "the dog",
    "the cat",
    "he went then",
    "boat engine",
    "another either thing",
    "some string the whatever"
];

function filterWord(arr, filter) {
    var i, j, cur, ret = [],
        re = new RegExp("\\b" + filter + "\\b");
    for (i = 0, j = arr.length; i < j; i++) {
        cur = arr[i];
        if (!re.test(cur)) {
            ret.push(cur);
        }
    }
    return ret;
}

var newSuggestions = filterWord(suggestions, "the");
console.log(newSuggestions);

演示：http: //jsfiddle.net/Kacju/1/

Answer 3

尝试使用正则表达式

var suggestions = [ "the dog", 
                "the cat", 
                "the boat",
                "boat engine",
                "boat motor",
                "motor oil"
              ];
var filtered = [],
    len = suggestions.length,
    val,
    checkCondition = /\bthe\b/;

for (var i =0; i < len; ++i) {
    val = suggestions[i];
    if (!checkCondition.test(val)) {
        filtered.push(val);
    }
}

检查小提琴

Answer 4

使用 ECMAScript5 的强大功能：

suggestions.reduce (
  function (r, s) {!(/\bthe\b/.test (s)) && r.push (s); return r; }, []);