javascript - 如何测试数组项的文本是否包含子字符串？

Question

我一直在研究测试数组中是否存在一个值，并不断获取 indexOf('textvalue') 的匹配项。

但是，我的“文本值”将是一个子字符串，因此不会进行匹配。这是因为我将字段名称传递给方法，只需要删除“Door: Front Left;”通过匹配“门”上的数组项来输入文本。有谁知道我该怎么做？

这是我正在处理的示例代码:

(spnSelectedDisclosures 将有一个选定字段的列表，这是从文本中删除先前字段选择的代码，以分号分隔。)

var currentText = $("#spnSelectedDisclosures").text();

var existingArr = currentText.split(";")

for (i=0;i < existingArr.length;i++) {

   var indexItem = " " + existingArr[i].toString(); // why is this still an object, instead of a string? Adding a space to it was a desperate try to make indexItem a string variable.

    if (indexItem.contains(substringText)) { // offending line, saying the object has no method 'contains'
       alert("there's been a match at: " + i);
       textToRemoveIndex = i;
       break;
    }
  }

 var textToRemove = existingArr[textToRemoveIndex];
 var newText = currentText.replace(textToRemove,""); 
 $("#spnSelectedDisclosures").text(newText); 

Answer 1

这是怎么回事？

for (i=0;i < existingArr.length;i++) {
  if (existingArr[i].indexOf(substringText) > -1) { 
    alert("there's been a match at: " + i);
    textToRemoveIndex = i;
    break;
  }
}