版权声明:未经同意不得转载 https://blog.csdn.net/qq_42707446/article/details/86471434
<input type="button" value="我是123">
<input type="button" value="我是123">
<input type="button" value="我是123">
<input type="button" value="我是123">
<input type="button" value="我是123">
<input type="button" value="我是123">
<script>
//获取元素标签
var inputs = document.getElementsByTagName("input");
//循环遍历所有的标签
for (var i = 0; i < inputs.length; i++) {
//给每一标签按钮注册点击事件并添加事件函数
inputs[i].onclick = function () {
//先让每一个按钮标签的value值默认为我是123
for (var j = 0; j < inputs.length; j++) {
inputs[j].value = "我是123";
}
//当前点击的按钮标签的value值变为321是我;
this.value = "321是我"
}
}
</script>