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一個JavaScript去除字串末尾的空白執行個體代碼，javascript末尾
<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>每天一個JavaScript執行個體-去除字串末尾的空白</title> <script> function white(){ var input = document.getElementById("inputid"); var lines = input.value.split("\n"); var resultString = ""; for (var i = 0; i < lines.length; i++){ var string = lines[i].trim(); resultString += string + "-"; } alert(resultString); } </script> </head> <body> <textarea id="inputid" placeholder="請輸入多行字串"></textarea> <a href="#" onClick="white()">clickMe</a> </body> </html>
檢測低版本瀏覽器，向下相容：
if(typeof String.trim == "undefined") String.prototype.trim = function(){ return this.replace(/(^\s*)|(\s*$)/g,""); } }
<script>
var a="00232300";
var oL=a.lastIndexOf("3");
var b=a.substr(0,oL+1);
alert(b);
</script>
javascript去除一個字串末尾的逗號
試試var s = '我是測試字串,';s.replace(/(.*)[,，]$/, '$1');
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