如何选择要复制的变量

Question

var delayBecauseFirebase = 1000;
setTimeout(function() {
var buttonShowJ = document.getElementById("buttonShow");
var messagesInJ = document.getElementById("messagesIn");
if(buttonShowJ)
{
buttonShowJ.addEventListener("click",function(){
var info = messagesInJ.innerHTML.replace(`<button id="buttonShow">Copy</button>`,"");
info.select(); \**(!HERE, because that doesnt works)**
document.execCommand("copy");
});
}else{
console.log("error");
}
}, delayBecauseFirebase);

我想选择"；文本"；内部信息可以进行

document.execCommand("副本"(；

但我不知道如何使用为var选择。

Answer 1

我认为这可以工作

• 在HTML中

<div class="container">
<div id="messagesIn">
...Some Text
</div>
<button id="buttonShow">Copy</button>
</div>

• 然后在代码中

var delayBecauseFirebase = 1000;
function copyText(){
//Select your text
var range = document.createRange();
range.selectNode(document.getElementById("messagesIn"));
window.getSelection().removeAllRanges();
window.getSelection().addRange(range);
//Call copy command
document.execCommand("copy");
}
function addClickListener() {
var buttonShowJ = document.getElementById("buttonShow");
if(buttonShowJ){
buttonShowJ.addEventListener("click", copyText);
}else{
console.error("Copy button not found");
}
}
setTimeout(addClickListener, delayBecauseFirebase);

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