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为什么我的函数无法执行?

[英]Why won't my function execute?

I have this code, and body 我有这段代码,身体

<body onload="mail_receive()">

won't execute it. 不会执行。

function mail_receive() {
    document.getElementById("w")="mail receive";
}

It won't show in 它不会显示在

<div id="w"></div>

You can't assign a string value to a DOM element and expect it to work. 您不能将字符串值分配给DOM元素并期望它起作用。 (In fact you probably can't use the result of a function call as an lvalue in Javascript to begin with.) (实际上,您可能无法将函数调用的结果用作Javascript中的左值。)

Try 尝试

document.getElementById('w').innerHTML = 'Mail received';

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