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@@ -123,11 +123,14 @@ export default {
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let scrollTop = window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop;
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// 滚动条滚动的距离
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let node = document.getElementsByClassName('nav_title')[0];
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- if (scrollTop > 120) {
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- node.classList.add('xiding_nav');
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- } else {
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- node.classList.remove('xiding_nav');
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+ if(node&&node.classList){
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+ if (scrollTop > 120) {
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+ node.classList.add('xiding_nav');
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+ } else {
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+ node.classList.remove('xiding_nav');
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+ }
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}
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+
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});
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},
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methods: {
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