Question

假设我有string = 'all these words are three characters orr longer'

我想检查一下

if (string.someWayToCheckAllWordsAre3CharactersOrLonger) {
  alert("it's valid!");
}

我该怎么做？

Answer 1

将字符串拆分为数组，然后使用every检查每个单词是否超过3个字符。

var string = 'all these words are three characters orr longer';

// Using regex \s+ to split the string, so only words are get in the array
string.trim().split(/\s+/).every(e => e.length >= 3);

Answer 2

这样的事情

var string = "all these words are three characters orr longer";
var words = string.split(' ');

var allWordsAreLongerThanThreeChars = true;
for(var i=0;i<words.length;i++){
    if(words[i].length < 3){
        allWordsAreLongerThanThreeChars = false;
        return;
    }
}

Answer 3

两个简单的步骤：使用.split()将字符串拆分为数组，循环遍历数组并使用.length()检查每个单词的长度。希望这可以帮助。

var string = 'all these words are three characters orr longer';
var stringArray = string.split(" ");
for (var i = 0; i < stringArray.length; i++){ 
  if(stringArray[i].length >= 3) { 
    alert(stringArray[i]);
   }
};

Javascript所有单词都是3个字符或更长

3 个答案: