javascript - 来自引号 javascript 中输入的值

Question

如果我有这样的代码，带有引号和作者，我如何获得两个 input type="text" 框，我可以在其中写入例如两个名称，然后将名称显示到用引号代替“(随机用户)”？

//store the quotations in arrays
quotes = [];

authors = [];

quotes[0] = "(randomuser) example (randomuser) example?";

authors[0] = "Authors!";

quotes[1] = "(random user) example (random user) example?";

authors[1] = "Authors!";

//calculate a random index
index = Math.floor(Math.random() * quotes.length);

//display the quotation

document.write("<DL>\n");

document.write("<DT>" + "\"" + quotes[index] + "\"\n");

document.write("<DD>" + " " + authors[index] + "\n");

document.write("</DL>\n");

//done

Answer 1

我认为您想用从几个 <input> 获得的字符串替换引号数组中的 (randomuser)标签。在这种情况下，您可以像这样获取这些输入的内容:

var user1 = document.getElementById("input1").value;
var user2 = document.getElementById("input2").value;

现在，您可以使用 String.replace() 替换“(randomuser1)”和“(randomuser2)”作为这些输入值，像这样:

//Sub in the usernames
var newquote = quotes[0].replace("(randomuser1)", user1); //quotes[0] can of course be any index
newquote = newquote.replace("(randomuser2)", user2);

然后就可以显示 newquote 。请记住，您应该避免 document.write() 。相反，您可以在页面上创建一个显示 div，然后将引用放入其中，如下所示:

var quotediv = document.getElementById("quoteDiv"); //get the div (or any other element) that you want to display the quote in
quotediv.innerHTML = newquote; //display your quote in the div.

JsFiddle example

编辑:

要从较大的列表中随机选择报价，您需要更改 quotes[0]类似 quotes[Math.floor(Math.random() * quotes.length)] 。要添加更多用户，您需要添加更多输入和更多替换语句。示例:

//Sub in the usernames
var ind = Math.floor(Math.random() * quotes.length); //select random quote
var newquote = quotes[ind].replace("(randomuser1)", user1);
newquote = newquote.replace("(randomuser2)", user2);
newquote = newquote.replace("(randomuser3)", user3);
newquote = newquote.replace("(randomuser4)", user4);
newquote = newquote.replace("(randomuser5)", user5);

可以将其简化为适用于更多用户的 for 循环，但我会让您自行解决。