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方法一：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<input type="button" value="button1" id="button1">
<input type="button" value="button2" id="button2">
<input type="button" value="button3" id="button3">
<input type="button" value="button4" id="button4">
<script>
function coloript() {
var colorarr=["green","red","blue","orange"];
var divarr=document.getElementsByTagName("input");
for(var i=0;i<divarr.length;i++){
(function (x) {
divarr[x].onclick=function () {
alert(colorarr[x]);
}
})(i); //匿名函数自执行传参
};
};
coloript();
</script>
</body>
</html>方法二：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<input type="button" value="button1" id="button1">
<input type="button" value="button2" id="button2">
<input type="button" value="button3" id="button3">
<input type="button" value="button4" id="button4">
<script>
function coloript2() {
var colorarr=["green","red","blue","orange"];
var divarr=document.getElementsByTagName("input");
for(var i=0;i<divarr.length;i++){
(function () {
var c=i;
divarr[i].onclick=function () {
alert(colorarr[c]);
}
})();
};
};
coloript2();
</script>
</body>
</html>