如何通过激活一个按钮来增加一个数字，以便每次按钮增加时都能访问某个功能？ [英] How can I increase a number by activating a button to be able to access a function each time the button is increased?

问题描述

我尝试创建一个按钮，当它被点击时（Onclick）

I am trying to create a button, that whenever it is clicked (Onclick)

<button onClick="showUser(<?php echo $b?>)">Back</button>

它会更改一个值（数字），以便数字可以被
能够显示信息。示例我正在调用按钮的下一个和后退 - 如果点击下一个按钮，我希望它每次点击它时都会增加它的值，以便在数字增加时，会根据该数字访问不同的信息，例如，当我第一次点击按钮（这将是值1）信息将是可见的，然后当我再次点击它会增加到（2），我将能够看到其他信息，问题是，每当我尝试增加值时，值只增加一次。

it changes a value (number) so that the number can be retrieved by a function that will be able to display information. Example I am calling the buttons next and back- if the button next is clicked, I want it to keep increasing it's value everytime I click it so that when it's number increases, different information will be accessed depending from that number, example when I first click the button (it would be value 1) information will be visible then when I click again it will increase to (2) and I will be able to see other information, the problem is that whenever I try to increase the value, the value increases only once.

我这样做是为了让信息显示出来，每次用户点击这些按钮后，会依次显示数据库中的信息。
我正在使用javascipt，php和sql。

I am doing this so that I will have information displayed and everytime the user clicks these buttons next and back, information sequentially will be shown- taken from a database. I am using javascipt, php and sql.

我说的可能吗？

Is what I am saying possible?

推荐答案

您可以使用一个对象，在其中设置需要在点击时更新的两个变量：
var obj = {
nextClicked：0，
prevClicked：0
};

You could use an object, in which you set the two variables that you need to update on click: var obj = { nextClicked : 0, prevClicked : 0 };

function buttonClick(type) {
    if(type == "prev") {
         obj.nextClicked++;
    }
    if(type == "next") {
         obj.prevClicked++
    }
}
<button type="button" onclick="buttonClick('next')">Next</button>
<button type="button" onclick="buttonClick('prev')">Prev</button>

由于您使用的是ajax，所以变量不会重置，除非刷新页面

Since you are using ajax, the variables would not reset, unless you refresh the page

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