js如何改变label的值

<label id="myLabel">原始文本</label>
<button onclick="changeLabel()">改变文本</button>

<script>
function changeLabel() {
    var label = document.getElementById('myLabel');
    label.textContent = '新的文本';
}
</script>

<label class="myLabel">原始文本1</label>
<label class="myLabel">原始文本2</label>
<button onclick="changeLabels()">改变文本</button>

<script>
function changeLabels() {
    var labels = document.getElementsByClassName('myLabel');
    for (var i = 0; i < labels.length; i++) {
        labels[i].textContent = '新的文本';
    }
}
</script>

<label>原始文本1</label>
<label>原始文本2</label>
<button onclick="changeAllLabels()">改变所有文本</button>

<script>
function changeAllLabels() {
    var labels = document.getElementsByTagName('label');
    for (var i = 0; i < labels.length; i++) {
        labels[i].textContent = '新的文本';
    }
}
</script>

document.addEventListener('DOMContentLoaded', function() {
    // 你的代码
});