Question

我使用了replace answerCode: string = 'answer_28903220'; constructor(){} let prompt = this.question.prompt.replace("{{this.answerCode}}", this.LookupAnswer(this.answerCode));//Not working: Output= "{{answer_28903220}} was born on:" let prompt = this.question.prompt.replace("{{answer_28903220}}", this.LookupAnswer(this.answerCode));//This is working fine:output= Sampath was born on: LookupAnswer(answerCode: string): string { let answer: string = ''; _.some(this.answers, (value, key) => { if (value.questionCode == answerCode.substring(7)) { answer = value.answer; return true; } }); return answer; }代码，如下所示。但它有一个问题。您能告诉我原因吗？

.TS

    var occList = document.getElementById('occClass');
    occArray = [];
    for (var i = 0; i < occList.options.length; i++) {
      if (occList.options[i].selected) {
        console.log(occList.options[i].value)
        occArray.push(occList.options[i].value);
      }
    }
    console.log(occArray.length)

Answer 1

根据Template Literals上的文档，将代码替换为：

let prompt = this.question.prompt.replace(`{{${this.answerCode}}}`,this.LookupAnswer(this.answerCode));

将"替换为反引号`，并将变量括在${ }

中

Answer 2

请尝试使用字符串模板文字：

`${this.answerCode}`

String Interpolate不起作用

2 个答案: