检查 url 是否包含黑名单字符串 javascript
如果我有一系列列入黑名单的单词，如下所示：
banLinks = ["hello.com","test.net","this.com"];
我想检查一下myLink我的通关是否a.getAttribute("href")包含这些词之一，最好的方法是什么？现在我正在尝试这个，但它不起作用：
for (let i = 0; i < banLinks.length; ++i) {
if ( myLink.indexOf(banLinks[i]) <= -1 ){
urllink = myLink;
}
}
完整部分：
var urllink;
const banLinks = ["hello.com","test.net","this.com"];
for (let j = 0; j < titlesArray.length; ++j) {
if ( "some logic not important" ){
for (let i = 0; i < banLinks.length; ++i) {
if ( titlesArray[j].link.indexOf(banLinks[i]) <= -1 ){
urllink = titlesArray[j].link;
}
}
}
};
MMMHUHU浏览 115回答 4
4回答
-
HUH函数
您是否处于无法使用的情况Array.prototype.findIndex？（即你必须支持IE）如果不：const banLinks = ["hello.com","test.net","this.com"];const is_banned = banLinks.findIndex(bl => myLink.indexOf(bl) > -1) > -1并使用您编辑的示例：const banLinks = ["hello.com","test.net","this.com"];// is_banned is now a function that ingests a link.const is_banned = (myLink) => banLinks.findIndex(bl => myLink.indexOf(bl) > -1) > -1// Get first link from titlesArray that is not banned.const urllink = titlesArray.map(t => t.link).find(li => is_banned(li) == false)尽管这都是根据您提供的代码进行的猜测。目前还不清楚你想在 for 循环中做什么。如果要查找第一个有效的（即，未禁止的）urllink，您应该break在找到它后才进行。否则，urllink其余的后续有效值titlesArray将覆盖先前的有效值。 -
大话西游666
告别 indexOf() 并使用 ES7 .includes() 来检查某个项目是否在数组内。我想检查我通过 a.getAttribute("href") 获得的 myLink 是否包含这些单词之一，最好的方法是什么？if ( banLinks.includes(myLink) ){ urllink = myLink; } -
蓝山帝景
你可以试试这个。请看一下const banLinks = ["hello.com","test.net","this.com"];var bannedUrlTest = new URL("http://www.hellotest.net");var safeUrlTest = new URL("http://www.google.net");var safeUrl = null;var bannedUrlArray = banLinks.filter((link)=>{ return bannedUrlTest.href.includes(link) })if(bannedUrlArray.length < 1){ safeUrl = bannedUrlTest.href;} else { console.log('contains banned links')}var safeUrlArray = banLinks.filter((link)=>{ return safeUrlTest.href.includes(link) })if(safeUrlArray.length < 1){ safeUrl = safeUrlTest.href; console.log('safeUrl', safeUrl);} -
慕的地10843
<html> <body> <ul class="links"> <li> <a href="hello.com">hello</a> </li> <li> <a href="steve.tech">steve</a> </li> <li> <a href="this.net">this</a> </li> <li> <a href="Nathan.net">Nathan</a> </li> </ul> </body> <script> var links=[...document.querySelectorAll(".links a")]; //all links const BlackListLinks = ["hello.com","test.net","this.com"]; //BlackListLinks const goodLinks=[]; //stores the links don't in BlackListLinks for (let i = 0; i < links.length; i++) { //iterate over all links const link = links[i].getAttribute("href"); //get the current link if (!BlackListLinks.includes(link)){ //test if the current link don't exist in BlackListLinks goodLinks.push(link); //add link to the goodLinks } } console.log(goodLinks);//["steve.tech", "this.net", "Nathan.net"] </script></html>
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相关分类
JavaScript