使用Javascript将UTM参数传递到按钮URL

// 获取URL中的UTM参数
var urlParams = new URLSearchParams(window.location.search);
var utmSource = urlParams.get('utm_source');
var utmMedium = urlParams.get('utm_medium');
var utmCampaign = urlParams.get('utm_campaign');

// 找到按钮元素
var button = document.getElementById('yourButtonId');

// 添加UTM参数到按钮URL
var buttonUrl = button.getAttribute('href');
var utmParams = 'utm_source=' + utmSource + '&utm_medium=' + utmMedium + '&utm_campaign=' + utmCampaign;
var updatedButtonUrl = buttonUrl + (buttonUrl.includes('?') ? '&' : '?') + utmParams;
button.setAttribute('href', updatedButtonUrl);