function qrsearch() {
// 获取触发提交事件的表单
var form = window.event ? window.event.target : (arguments[0] ? arguments[0].target : null);
if (!form) {
form = document.querySelector('form[action*="/search"]');
}
var input = form ? form.querySelector('input[name="q"]') : document.querySelector('input[name="q"]');
if (!input) {
return false;
}
var q = input.value;
if (!q || q.trim() === '') {
return false;
}
return true;
}
// 确保回车键能正常提交表单
(function() {
function initSearchForms() {
var searchForms = document.querySelectorAll('form[action*="/search"]');
searchForms.forEach(function(form) {
var input = form.querySelector('input[name="q"]');
if (input) {
// 监听回车键事件
input.addEventListener('keydown', function(e) {
if (e.key === 'Enter' || e.keyCode === 13) {
e.preventDefault();
var q = this.value.trim();
if (q) {
form.submit();
}
}
});
}
});
}
// DOM加载完成后初始化
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', initSearchForms);
} else {
initSearchForms();
}
// window.load 后也执行一次
window.addEventListener('load', function() {
setTimeout(initSearchForms, 100);
});
})();
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