如何在 JavaScript 中搜索字符串?
以下是 JavaScript 中搜索字符串的代码 −
示例
<!DOCTYPE html> <html lang="en" > <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <title>Document</title> <style> body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } .result { font-size: 20px; font-weight: 500; } </style> </head> <body> <h1>Searching a string in JavaScript</h1> <div class="sample">The spring season is about to come.</div> <div style="color: green;" class="result"></div> <button class="btn">CLICK HERE</button> <h3> Click on the above button to find the string 'spring' in the above string </h3> <script> let btnEle = document.querySelector(".btn"); let sampleEle = document.querySelector(".sample").innerHTML; let resEle = document.querySelector(".result"); btnEle.addEventListener("click", () => { resEle.innerHTML = "The string spring is found at position " + sampleEle.search("spring"); }); </script> </body> </html>
输出
以上代码将生成以下输出 −
单击“单击此处”按钮时 −
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