javascript - 如何找到数组中特定索引的长度

Question

尝试了很多东西

split[6].length
String.split[6].length

按照这些行没有成功得到最后一个错误消息......

ReferenceError: "string"未定义。

您好 感谢您的回复，最后我根据原始数组的索引创建了一个数组，然后查询了它的长度。如您所见，我无法从输入字符串中删除单引号和双引号。 javascript 的新手，它让我有点疯狂哈哈。

// Loop through all the input messages
for (var i = 0; i < input.length; i++) {    
var next = output.append(input[i]);
// Get the body of the current input message
var body = input[i].text;
// Set the body
next.text = body ;
next.text.replace(/\'/g, "&#39;");
next.text.replace(/\"/g, "&#34;");
//replace(/['"]/g,'');
// Set a property    
var split = next.text.split(",");       
var array1 = split[5];
var array2 = split[2];
next.setProperty("aaaLength", split.length);
next.setProperty("aaaSplitValue", split.length);  
next.setProperty("aaaArray1Value", split.length); 
next.setProperty("aaaArray2Value", split.length);

if (next.getProperty("BaseFilename")=="name"){
    next.text.replace(/\'/g, "&#39;");
    next.text.replace(/\"/g, "&#34;");
    //replace(/['"]/g,'');
    if(split.length>10){

        next.setProperty("FullFilename","nameError"+i);
        next.setProperty("BaseFilename","nameError"+i);
        next.setProperty("Suffix",".err");

        }
        if(array1.length>10){
            next.setProperty("FullFilename","nameSnameSuffixError"+i);
            next.setProperty("BaseFilename","nameSnameSuffixError"+i);
            next.setProperty("Suffix",".err");      
        }
}

Answer 1

如果元素是字符串，长度应该起作用。在 http://jsfiddle.net/46nJw/ 查看以下操作

var parts = "foo,bar,baz,foop".split(/,/);
alert( parts[3].length ); // should alert 4