Question

我正在努力打造一个迷你Google。在Facebook或Instagram上输入内容的地方，当您单击“搜索”按钮时，您将被转到该页面。到目前为止，我已经知道了，但这只发给了Facebook。

var btn = document.getElementById("btn");
var search = document.getElementById("search")

btn.onclick = function (){

    if (search.value == "Facebook" || "facebook"){
        window.location = "https://www.facebook.com/";

    } else if( search.value == "Instagram" || "instagram"){
        window.location = "https://www.instagram.com/";
    }
}

<input id="search" type="text"/>
<button id="btn" type="button">Search</button>

Answer 1

问题出在您的if上，if (search.value == "Facebook" || "facebook")就像是说

如果search.value == "Facebook"为真，或"facebook"为真，请做

这行不通，因为"facebook"始终为真，因此从未输入Instagram的第二个if。

相反，您想要的是

如果search.value == "Facebook"为真，或者search.value == "facebook"为真，则

var btn = document.getElementById("btn");
var search = document.getElementById("search")

btn.onclick = function (){

    if (search.value == "Facebook" || search.value == "facebook"){
        window.location = "https://www.facebook.com/";

    } else if( search.value == "Instagram" || search.value == "instagram"){
        window.location = "https://www.instagram.com/";
    }
}

<input id="search" type="text"/>
<button id="btn" type="button">Search</button>

如果输入值为字符串，则更改窗口位置

1 个答案: