背景:当前 VUE 页面数据量很大,右侧出现滚动条, 进入该页面,页面定位到指定区域;
项目要求: 进入页面,定位到指定行(红色标记)
直接看效果:
代码demo:
<template><div><p style="height: 300px">fkahfkahfha</p><p style="height: 300px">fkahfkahfha</p><p style="height: 300px">fkahfkahfha</p><p style="height: 300px">fkahfkahfha</p><p style="height: 300px">fkahfkahfha</p><p style="height: 300px">fkahfkahfha</p><p style="height: 300px">fkahfkahfha</p><p style="height: 300px">fkahfkahfha</p><p style="height: 300px">fkahfkahfha</p><div class="stackTrace error-detail" ref="stackTraceContainer"><divv-for="(line, index) in formattedAdvice":key="index"class="code-line"v-html="line"ref="codeLines"></div></div></div>
</template><script>
export default {data() {return {currentBugInfo: {advice: `c
// example1.c
// memory-leaks error
#include <stdlib.h>int main(void) {for (int i = 0; i < 99999999; i++) {char *buffer = (char *)malloc(1024 * sizeof(char)); // 分配动态内存// ...// free(buffer); // 内存泄漏}return 0;
}
},// example2.cpp
// memory-leaks error
int main() {char *buffer = new char[1024];// ...buffer = new char[2048]; // 指针指向新的缓冲区,一开始分配的缓冲区无法访问,导致内存泄漏// ...delete[] buffer;return 0;
}// example2.cpp
// memory-leaks error
int main() {char *buffer = new char[1024];// ...buffer = new char[2048]; // 指针指向新的缓冲区,一开始分配的缓冲区无法访问,导致内存泄漏// ...delete[] buffer;return 0;
}
`,errorLine: 26, // 假设错误行号是6},};},computed: {formattedAdvice() {const lines = this.currentBugInfo.advice.split("\n");// 为特定行添加红色样式const highlightedLine = `<span style="color: red;">${lines[5]}</span>`;// 替换特定行,注意行号是从0开始的,所以是 errorLine - 1lines[this.currentBugInfo.errorLine - 1] = highlightedLine;// 使用 join 将数组重新组合为字符串,并在行之间添加换行符return lines.map((line, index) => {return index < lines.length - 1 ? line + "\n" : line;});},},mounted() {this.scrollToErrorLine();},methods: {scrollToErrorLine() {this.$nextTick(() => {// 定位到特定行的DOM元素const errorLineElement =this.$refs.stackTraceContainer.children[this.currentBugInfo.errorLine - 1];console.log("获取到什么", errorLineElement);// 将该行滚动到可见区域的中间位置--我在当前demo页面是可以定位到红色错误行的// 但是项目上,一直有为题,最后给滚动加个定时器解决了// errorLineElement.scrollIntoView({// behavior: "smooth",// block: "center",// });// 添加定时器setTimeout(() => {errorLineElement.scrollIntoView({behavior: "smooth",block: "center",});}, 1000);});},},
};
</script>
<style scoped>
.stackTrace {font-family: FiraCode, PingFang SC, Microsoft YaHei;overflow: auto;box-sizing: border-box;border-radius: 3px;white-space: pre-wrap; /* css3.0 */white-space: -moz-pre-wrap; /* Firefox */white-space: -pre-wrap; /* Opera 4-6 */white-space: -o-pre-wrap; /* Opera 7 */word-wrap: break-word; /* Internet Explorer 5.5+ */word-break: break-all;font-size: 14px;/* color: #fff; */line-height: 24px;overflow-y: auto;overflow-x: hidden;
}
.error-detail {max-height: 400px;overflow: auto;font-weight: 400;
}
</style>