Determining if one of the two strings is a substring of the other String Javascript?
Question
Suppose I have two text fields where the user can enter any text.
One field can have: The sky is blue.
Second field have: The ocean is blue.
In Javascript what is the easiest way to check if one string entered in one field is a substring for the other field?
So far this is what I have:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Substring Test</title>
<script type="text/javascript">
function displayContent() {
var contentEntered = document.getElementById("userContent").value;
var contentEnteredSecond = document.getElementById("secondUserContent").value;
document.getElementById("result").innerHTML += "<p> The content entered was " + contentEntered + " </p>";
document.getElementById("result").innerHTML += "<p> The content entered was " + contentEnteredSecond + " </p>";
}
</script>
</head>
<body>
<h1>Substring</h1>
<div id="mainCont">
<p>Please enter any content.</p>
<p>Content:
<input type="text" id="userContent">
</p>
<p>Content:
<input type="text" id="secondUserContent">
</p>
<p>
<input type="button" onclick="displayContent();" value="Submit">
</p>
<div id="result"></div>
</div>
</body>
</html>
3 answers
solution1
2 2015-11-30 19:36:01
function checkSub(str1, str2){
if(str1.indexOf(str2) > -1 || str2.indexOf(str1) > -1) return true;
else return false;
}
solution2
1 2015-11-30 19:45:37
在ES6中，使用String.prototype.includes很简单：
str1.includes(str2) || str2.includes(str1);
solution3
0 2015-11-30 19:45:53
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