Question

我在HTML中有一个文本必须在文本中包含&nbsp，然后我使用Javascript来获取innerHTML并进行比较，但它不起作用。

   var x = randomGen();
   document.getElementById("c"+x[0]).innerHTML="&nbsp&nbspa, b, c&nbsp&nbsp";
   document.getElementById("c"+x[1]).innerHTML="&nbsp&nbspc, d, e&nbsp&nbsp";
   document.getElementById("c"+x[2]).innerHTML="&nbsp&nbspf, g, h&nbsp&nbsp";
   document.getElementById("c"+x[3]).innerHTML="&nbsp&nbspa, a, a&nbsp&nbsp";

function checkans(ans){
    if (ans=="&nbsp&nbspa, a, a&nbsp&nbsp") {
       alert(ans);
    }
}

HTML正文：

<div class="ans" id="c1" onclick="checkans(this.innerText)"></div>
<div class="ans" id="c2" onclick="checkans(this.innerText)"></div>
<div class="ans" id="c3" onclick="checkans(this.innerText)"></div>
<div class="ans" id="c4" onclick="checkans(this.innerText)"></div>

所有案例都返回false。

Answer 1

然后我使用Javascript来获取innerHTML并进行比较

事实并非如此。您非常清楚地使用innerText，而不是innerHTML，这些不一样。

如果您实际使用innerHTML，并更正您的代码以使用 （当您将&nsbp分配给&nsbp;时，浏览器会自动将.innerHTML更改为var x = [3, 2, 1, 4] document.getElementById("c" + x[0]).innerHTML = "  a, b, c  "; document.getElementById("c" + x[1]).innerHTML = "  c, d, e  "; document.getElementById("c" + x[2]).innerHTML = "  f, g, h  "; document.getElementById("c" + x[3]).innerHTML = "  a, a, a  "; function checkans(ans) { if (ans == "  a, a, a  ") { alert(ans); } }代码有效：

<div>Click the "a, a, a" option to see an alert box</div>
<div class="ans" id="c1" onclick="checkans(this.innerHTML)"></div>
<div class="ans" id="c2" onclick="checkans(this.innerHTML)"></div>
<div class="ans" id="c3" onclick="checkans(this.innerHTML)"></div>
<div class="ans" id="c4" onclick="checkans(this.innerHTML)"></div>

WITH del AS (
        DELETE FROM a
        WHERE EXISTS ( SELECT *
                FROM b
                WHERE b.id = a.id
                )
        returning *
        )
INSERT INTO a (id, x, y, z)
SELECT id, x, y, z
FROM b
WHERE EXISTS (
        SELECT *
        FROM del
        WHERE del.id = b.id
        );

Javascript字符串包含“”无法匹配

1 个答案: