语法:
RegExpObject.exec(str)
说明:参数str是要搜索的字符串,这是必填字段,不可省略。
示例1:在原始字符串中搜索字符串“World”
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> </head> <body> <p id="demo1"></p> <p id="demo2"></p> <script> var demo1 = document.getElementById('demo1'); var str = "Hello World!Welcome to here! "; demo1.innerHTML = "字符串:"+str; var regex = new RegExp("World"); // 在字符串中匹配"World" var rex = regex.exec(str); document.getElementById("demo2").innerHTML = " 找到 " + rex.length + " 个匹配项: " + rex; </script> </body> </html>
效果图:
示例2:在原始字符串中搜索字符串“rep”
<script> var str = "Hello World!Welcome to here! "; var regex = new RegExp("rep"); // 在字符串中匹配"World" var rex = regex.exec(str); alert(rex); </script>
输出:
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