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javascript - 将字符串 "Microsoft"替换为 "W3Schools Test$' "

转载 作者:行者123 更新时间:2023-11-30 09:29:54 25 4
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我想用“W3Schools Test$”替换字符串“Microsoft”。

请注意美元符号后有单引号。

它不适用于我的以下代码。您可以看到演示一运行良好,但演示二运行不佳。

function myFunction() {
var str_one = document.getElementById("demo-one").innerHTML;
var res_one = str_one.replace("Microsoft", "W3Schools Test$");
document.getElementById("demo-one").innerHTML = res_one;

var str_two = document.getElementById("demo-two").innerHTML;
var res_two = str_two.replace("Microsoft", "W3Schools Test$'");
document.getElementById("demo-two").innerHTML = res_two;
}
<p>Click the button to replace "Microsoft" with "W3Schools" in the paragraph below:</p>

<p id="demo-one">Visit Microsoft!</p>
<p id="demo-two">Visit Microsoft!</p>

<button onclick="myFunction()">Try it</button>

这是上面代码的输出。

单击按钮将下面段落中的“Microsoft”替换为“W3Schools”:
访问 W3Schools 测试 $!
访问 W3Schools 测试!!

第三行应该显示为 Visit W3Schools Test$' 但它显示为 Visit W3Schools Test!!

请帮助我摆脱这个问题。

提前致谢。

最佳答案

replace 的上下文中, $' 用于插入匹配子字符串后面的字符串部分。

要使用 string#replace 插入 $,请使用 $$

function myFunction() {
var str_one = document.getElementById("demo-one").innerHTML;
var res_one = str_one.replace("Microsoft", "W3Schools Test$");
document.getElementById("demo-one").innerHTML = res_one;

var str_two = document.getElementById("demo-two").innerHTML;
var res_two = str_two.replace("Microsoft", "W3Schools Test$$'");
console.log(res_two);
document.getElementById("demo-two").innerHTML = res_two;
}
<p>Click the button to replace "Microsoft" with "W3Schools" in the paragraph below:</p>

<p id="demo-one">Visit Microsoft!</p>
<p id="demo-two">Visit Microsoft!</p>

<button onclick="myFunction()">Try it</button>

关于javascript - 将字符串 "Microsoft"替换为 "W3Schools Test$' ",我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/46945532/

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