仅定义函数，但无论如何立即执行 [英] Function only defined but immediately executed anyway

问题描述

我在文件ajaxrequest.js中使用简短的javascript代码时遇到了麻烦.这是:

I'm having trouble with a short javascript code in my file ajaxrequest.js . Here it is :

function afficher () {
  $.post('requete_affichage.php', function (data) {
    $('#name-data').text(data); });
}

$('#bouton2').on('click', afficher());

所以问题在于，一旦我在浏览器中点击"localhost"，该函数便立即执行并将数据插入到index.html页的div#name-data字段中，而没有等待我的点击#bouton2这样做.有什么主意吗?

So the problem is the function immediately executes and inserts the data in the div#name-data field of my index.html page as soon as i hit "localhost" in my browser, and doesn't wait for my click on #bouton2 to do so. Any idea ?

推荐答案

通过告诉函数立即执行，在函数后面加上方括号.要将功能引用分配给点击处理程序，请删除括号:

By including the brackets after the function you are telling it to execute immediately. To assign the function reference to the click handler, remove the brackets:

$('#bouton2').on('click', afficher);

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