Javascript: return 如果数组中的所有字符串都存在于另一个字符串中则为真

Question

我必须检查变量中的字符串是否包含所有 array 中的字符串。非常简单的事情，但我无法让它工作！我已经尝试了很多东西，但是太复杂了而且没有真正起作用。我正在寻找一些建议。

类似于：

var myArray = ["cat","dog","bird"];
var myString = "There is a cat looking the bird and a dog looking the cat";
var myString2 = "There is a cat and a dog looking one each other";

myArray 和 myString 必须为真并且 true 并且 myArray 和 myString2 必须为假

我正在处理这样的事情：

var selector = "dir.class#id";
var code = '<div id="id" class="class"></div>';
var tokens = selector.split(/[\.,#]+/);

for (var i = tokens.length - 1; i >= 0; i--) {
    var counter = [];
    if (code.indexOf(tokens[0]) > -1 ) {
        counter.concat(true);
    }
}

谢谢！

Answer 1

你可以像下面那样做

var arePresentInText = function (text,words) {
    return words.every(function(word){
        return text.indexOf(word) > -1;
    });
}

console.log(arePresentInText(myString,myArray)); //prints true
console.log(arePresentInText(myString2,myArray)); //prints false

Answer 2

这应该有效：

 var myArray = ["cat","dog","bird", "cat"];
 var myString = "There is a cat looking the bird and a dog looking the cat";
 var myString2 = "There is a cat and a dog looking one each other";

 function checkValue(arr, str){
    var cnt = 0;
    for(i in arr){
        var val = arr[i];
        if(str.indexOf(val) > -1) cnt++;
    }

    return (arr.length == cnt) ? true : false;
 }

 console.log(checkValue(myArray, myString));

Answer 3

function checkContainStr(arr, str){
for(i in arr){
    if(str.indexOf(arr[i]) == -1)
     return false;
}
 return true;
}

Answer 4

试试这个功能：

function arrayElementsInString(ary, str){
  for(var i=0,l=ary.length; i<l; i++){
    if(str.indexOf(ary[i]) === -1){
      return false;
    }
  }
  return true;
}

Answer 5

如果你想匹配单词末尾的字符串，但不一定在开头，你需要使用正则表达式或其他处理。

检查 indexOf 匹配单词中任意位置的字符序列，而不是末尾。考虑以下与末尾或整个单词匹配的字符串：

    var myArray = ["cat","dog","bird"];
    var myString = "There is a cat looking the bird and a dog looking the cat";
    var myString2 = "There is a cat and a dog looking one each other";
    var myString3 = "There is a classcat and a iddog looking at bird";
    var myString4 = "There is a catclass and a dog looking at bird";

    document.write(myArray.every(function(word) {
      return (new RegExp('\w*' + word + '\b').test(myString));
    }) + '<br>');
    document.write(myArray.every(function(word) {
      return (new RegExp('\w*' + word + '\b').test(myString2));
    }) + '<br>');
    document.write(myArray.every(function(word) {
      return (new RegExp('\w*' + word + '\b').test(myString3));
    }) + '<br>');
    document.write(myArray.every(function(word) {
      return (new RegExp('\w*' + word + '\b').test(myString4));
    }));

Javascript: return 如果数组中的所有字符串都存在于另一个字符串中则为真

Javascript: return true if ALL strings inside an array are present in another string

javascript

arrays

string

comparison