问题描述
我正在尝试通过文本框搜索整个单词.假设我搜索我",我应该找到所有出现的单词我".在本文中,但不是"memmm".每说一遍.
I am trying to search a single whole word through a textbox. Say I search "me", I should find all occurrences of the word "me" in the text, but not "memmm" per say.
我正在使用JavaScript的search('my regex expression')
执行当前搜索(没有成功).
I am using JavaScript's search('my regex expression')
to perform the current search (with no success).
在使用了\b
开关的一些建议(似乎无效)之后,我发布了关于我的问题的修订说明:
After several proposals to use the \b
switches (which don't seem to work) I am posting a revised explanation of my problem:
由于某种原因,这似乎无法解决问题.假设以下JavaScript搜索文本:
For some reason this doesn't seem to do the trick. Assume the following JavaScript search text:
var lookup = '\n\n\n\n\n\n2 PC Games \n\n\n\n';
lookup = lookup.trim() ;
alert(lookup );
var tttt = 'tttt';
alert((/\b(lookup)\b/g).test(2));
移动线条是必不可少的
推荐答案
要使用动态正则表达式,请参见我更新的代码:
To use a dynamic regular expression see my updated code:
new RegExp("\\b" + lookup + "\\b").test(textbox.value)
您的具体示例倒退:
alert((/\b(2)\b/g).test(lookup));
这篇关于如何在JavaScript中匹配整个单词?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!