Question

我想将输入内部的值增加一你可以帮助我，因为我刚开始使用javascript。谢谢你和你的帮助非常感谢

下面是代码：

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function myFunctions() {
    var x = document.createElement("INPUT");
    x.setAttribute("type", "number");
    x.setAttribute("value", "1");
    var y = document.createElement("br");
    var z = document.createAttribute("readonly");
    document.body.appendChild(x);
    document.body.appendChild(y);
    x.setAttributeNode(z);
}

＆＃13;

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

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Answer 1

您可以尝试以下代码：

var cnt=1;
function myFunctions() {
    var x = document.createElement("INPUT");
    x.setAttribute("type", "number");
    x.setAttribute("value", cnt);
    var y = document.createElement("br");
    var z = document.createAttribute("readonly");
    document.body.appendChild(x);
    document.body.appendChild(y);
    x.setAttributeNode(z);
    cnt++;
}

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

Answer 2

试试这个

＆＃13;

var count = 0;
function myFunctions() {
    var x = document.createElement("INPUT");
    x.setAttribute("type", "number");
    x.setAttribute("value", count++);
    var y = document.createElement("br");
    var z = document.createAttribute("readonly");
    document.body.appendChild(x);
    document.body.appendChild(y);
    x.setAttributeNode(z);
}

＆＃13;

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

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增加文本输入中的值 - javascript

2 个答案: