本文介绍了无法读取未定义错误的属性“匹配"的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!
问题描述
我试图在 React JS 前端显示一些文本来代替配置文件图像,当它不可用时.基本上,我将当前客户名称传递给一个函数,该函数提取名称中所有单词的第一个字符.我能够只显示名称,但是当我执行函数调用时,我收到无法读取未定义的属性匹配"错误并且页面未呈现.Console.log() 显示未定义.
I am trying to display some text in React JS frontend in place of a profile image when it isn't available.Basically, I pass the current customer name to a function which extracts the first characters of all the words in the name. I am able to display just the name but when I do a function call, I get Cannot read property 'match' of undefined" error and the page does not render. Console.log() displays undefined.
HTML:
<li className="nav-item">
<div id="container_acronym">
<div id="name_acronym">
{this.acronym_name(this.state.lead_details.customer_name)}
</div>
</div>
</li>
JS:
acronym_name(str){
var regular_ex=/(w)/g;
var matches = str.match(regular_ex);
var acronym = matches.join('');
document.getElementById("name_acronym").innerHTML = acronym;
}
推荐答案
acronym_name(str){
if (typeof str == 'undefined') {
str = '';
}
else{
var regular_ex=/(w)/g;
var matches = str.match(regular_ex);
var acronym = matches.join('');
return acronym;
}
}
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