Addeventlistener与阿贾克斯效果不佳 [英] Addeventlistener with ajax not working well
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问题描述
我想在一个'div'中显示一个txt文件的内容，所以我用一个按钮调用我的函数，但是即使我不按下按钮，函数也会触发，这里是我的HTML代码：
I want to show the content of a txt file inside a 'div', so I'm calling my function with a button, but the functions triggers even if I don't push the button, here's my HTML code:
<body>
<form>
<input id="showF" type="button" value= "Show File" />
</form>
<div id="contaniner" style="background-color:#99FF66;">
<p>It will show the txt content</p>
</div>
</body>
以及我的js代码：
And my js code:
window.onload=function(){
document.getElementById("showF").addEventListener("click",sacardatos('P1.txt','container'),false);
}
function sacardatos(data, idDiv){
var XMLHttpRequestObject = false;
if (window.XMLHttpRequest) {
XMLHttpRequestObject = new XMLHttpRequest();
} else if (window.ActiveXObject) {
XMLHttpRequestObject = new ActiveXObject("Microsoft.XMLHTTP");
}
if(XMLHttpRequestObject) {
var objeto = document.getElementById(idDiv);
XMLHttpRequestObject.open("GET", data);
XMLHttpRequestObject.onreadystatechange = function(){
if (XMLHttpRequestObject.readyState == 4 && XMLHttpRequestObject.status == 200) {
objeto.innerHTML = XMLHttpRequestObject.responseText;
}
}
XMLHttpRequestObject.send(null);
}
}
推荐答案
第二个参数 addEventListener 应该是一个函数。你没有传递函数，你立即调用函数并传递结果。更改为：
The second argument to addEventListener should be a function. You're not passing a function, you're calling the function immediately and passing the result. Change to:
document.getElementById("showF").addEventListener("click", function() {
sacardatos('P1.txt','container');
}, false);
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