[英]how to check whether any special character is present in a particular string
我想從字符串中刪除'<''>'，所以我使用了腳本
<html>
<body>
<script>
var f = ((/(<script>)/i).exec("hello<") != null);
alert("ok"+f);
document.write("<br>Value:" +f);
</script>
</body>
</html>
但是我將變量f值設置為null。
如果代碼有任何問題，請您幫我。
我希望這個能幫上忙
if("hello<".indexOf('<') != -1){
var f = "hello<".replace('<','');
alert("ok "+f);
}
您可以使用JavaScript正則表達式來實現此目的。
"<script>".replace(/<|>/ig, "");
outputs: "script"
var f = ('<script>'.replace(/<|>/g, ''));
alert("ok"+f);
document.write("<br>Value:" +f);
您可以使用.test方法：
var originalString = '<script>',
r = originalString.test(/<|>/g, ''); // returns true or false
if (r === true) {
//whatever you wanna do if you have special characters in
// your string
} else {
// no special chars - all clean!
}
檢查字符串是否在javascript中包含任何特殊字符或字符串
[英]checking whether a string contains any special character or string in javascript
如何檢查JavaScript中是否存在區分大小寫和特殊字符的變量中的特定字符串？
[英]How to check if particular string is present in variable with case sensitive and special characters in javascript?
如何檢查字符串中的字符是否是 JavaScript 中的特定字符？
[英]How do I check whether a character in a string is a specific character in JavaScript?
如何檢查字符串中的某個字符是否在另一個字符之后？
[英]How to check whether a certain character in string comes after another character?
使用should.js如何檢查數組中是否存在字符串？
[英]Using should.js how to check whether a string is not present in an array?
當用戶單擊鏈接時，如何檢查GridHyperLink的NavigateUrl中是否存在特定文本？
[英]How to check whether the particular text present in GridHyperLink's NavigateUrl, when the user clicks on the link?
如何使用javascript傳遞帶/或任何其他特殊字符的字符串
[英]how to pass string with / or any other special character using javascript
如何編寫正則表達式來檢查字符串是否包含特殊字符和多個空格
[英]How to write regex to check if a string contains special character and multiple whitespaces
聲明:本站的技術帖子網頁，遵循CC BY-SA 4.0協議，如果您需要轉載，請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.