问题

Question

问题

如何在字符串中找到一组特定的单词（在本例中为gval）定义为特定的单词集？

if(gval.indexOf("define") > -1){
    console.log("Yo! gval contains Define");
}
var gval = input.val().trim().toLowerCase();

谢谢！

Answer 1

如果您想找到＆＃34; wordset＆＃34; ，那么您需要使用预期字的Array 需要然后利用 jQuery 库提供的$.inArray功能，您可以尝试以下方法：

现场演示： http://jsfiddle.net/t52aLmcz/

var text = 'this is a text that contains defined word', 
    textWords = text.split(' '), // create array of text words
    expectedWords = ['defined', 'this'], // expected words to be found
    word;

for (var i in textWords) {
    word = textWords[i];
    if($.inArray(word, expectedWords) != -1) {
        break; // if one of the expected words is found, do a break
    }
}

if (word) { // word exists
    console.log('Your text contains: ' + word);
}

Answer 2

也许你可以使用.split（）来解决你的问题。创建一个包含每个单词的数组。循环查看该单词是否等于n＃39; gval＆＃39;。

示例

<head> </head> <body> <h1 id=gval>In this sentence is a word gval and i want to find it! maybe more then once? gval gval</h1> <h2 id=outcome></h2> <script> var string = document.getElementById('gval').innerHTML; //create the string you want to check. var stringArray = string.split(' ');// Split the string every time it sees an space ' '. var ammount = 0;//This wil be the ammount of 'gval' there are in the sentence. for(i = 0; i < stringArray.length;i++){ // Loop through the length of the array. if(stringArray[i] == 'gval'){ // Check if the word is the same as 'gval'. ammount++;//If the word is the same as 'gval' increment ammount with +1. } } document.getElementById('outcome').innerHTML = ammount;//set the text in the H2 with id outcome to the ammount. </script> </body>

Answer 3

如果您正在寻找不区分大小写的搜索，请使用此方法。你首先需要设置变量gval，然后才能检查indexOf

var gval = input.val().trim().toLowerCase();
if(gval.indexOf("define") > -1){
console.log("Yo! gval contains Define");
}

查找字符串jQuery / Javascript的部分内容

问题

谢谢！

3 个答案: