Javascript 如何检查字符串是否存在于jquery中的变量中
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How to check if string is present in variable in jquery
提问by Mirage
I have the variable like
我有这样的变量
var myVar = "The man is running"
var myVar = "The man is running"
pattern = "run"
pattern = "run"
I want to check via jquery that if it conatins words "run"
我想通过 jquery 检查它是否包含“运行”字样
Like
喜欢
if($(myVar).(:contains(pattern)))
return true
Is this possible
这可能吗
回答by Ohgodwhy
RegExp option...just because..RegExp.
RegExp 选项...只是因为...RegExp。
var pattern = /run/;
//returns true or false...
var exists = pattern.test(myVar);
if (exists) {
//true statement, do whatever
} else {
//false statement..do whatever
}
回答by jeff
You would use the Javascript method .indexOf()to do this. If you're trying to test whether the text of a DOM element contains the pattern, you would use this:
您将使用 Javascript 方法.indexOf()来执行此操作。如果您尝试测试 DOM 元素的文本是否包含该模式，您可以使用以下命令：
if($(myVar).text().indexOf(pattern) != -1)
return true;
If the variable myVarisn't a selector string, you shouldn't wrap it in the jQuery function, though. Instead, you would use this:
但是，如果变量myVar不是选择器字符串，则不应将其包装在 jQuery 函数中。相反，你会使用这个：
if(myVar.indexOf(pattern) != -1)
return true;
回答by Paul Armstrong
You do not need jQuery for this. Just check for the index of the string.
为此，您不需要 jQuery。只需检查字符串的索引。
if (myVar.indexOf(pattern) !== -1) { ... }
if (myVar.indexOf(pattern) !== -1) { ... }
回答by elclanrs
Regex?
正则表达式？
var hasRun = /run/i.test(myVar) // case insensitive
