jQuery在变量中搜索文本？ [英] jQuery Search for Text in a Variable?

问题描述

我有一个包含一些文本的变量，一些html，基本上可以是一个字符串。我需要在变量中搜索特定字符串，以便在包含该变量时以不同方式处理该变量。以下是我要做的事情的片段，显然不起作用：）

I have a variable that contains some text, some html, basically can be a string. I need to search the variable for a specific string to process that variable differently if it is contained. Here is a snippet of what I am trying to do, does not work obviously :)

$.each(data.results,
   function(i, results) {
   var text = this.text                   
   var pattern = new RegExp("^[SEARCHTERM]$");
    if(pattern.test( text ) )
    alert(text);  //was hoping this would alert the SEARCHTERM if found...

推荐答案

您可以使用 .indexOf（）代替执行搜索。

You could use .indexOf() instead to perform the search.

如果找不到该字符串，则返回 -1 。如果找到，则返回第一个从零开始的索引它所在的位置。

If the string is not found, it returns -1. If it is found, it returns the first zero-based index where it was located.

var text = this.text;
var term = "SEARCHTERM";

if( text.indexOf( term ) != -1 )
    alert(term);

如果您希望完全匹配，您使用 ^ 和 $ 似乎暗示，你可以做一个 === 比较。

If you were hoping for an exact match, which your use of ^ and $ seems to imply, you could just do an === comparison.

var text = this.text;
var term = "SEARCHTERM";

if( text === term )
    alert(term);

---

编辑：基于在你的评论中，你想要一个完全匹配，但 === 不起作用，而 indexOf（）是。如果有一些需要修剪的空白，有时会出现这种情况。

---

Based on your comment, you want an exact match, but === isn't working, while indexOf() is. This is sometimes the case if there's some whitespace that needs to be trimmed.

尝试使用 jQuery的 jQuery.trim（）方法。

Try trimming the whitespace using jQuery's jQuery.trim() method.

var text = $.trim( this.text );
var term = "SEARCHTERM";

if( text === term )
    alert(term);

如果这不起作用，我建议记录 this.text 到控制台查看它是否是您期望的值。

If this doesn't work, I'd recommend logging this.text to the console to see if it is the value you expect.

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