[Fixed] How to use condition in HTML attributes?


I am loading an image in a new window when user click a button in Angular.
The popup which I opened contains HTML.

Angular HTML:

<button class="btn btn-primary" type="button" (click)="openDocument(doc)"> View </button>


openDocument(doc) {
    doc.uploadedDocUrl = "https://beta.lottoweaver.com/WeaverDoc/commonContent/www.nationallottery.co.za/playerDocument/408441_ID_PROOF_null_1616082462069.pdf"

    let str = `<embed src=${doc.uploadedDocUrl} width='100%' height="100%">`;
    this.OpenWindow = window.open('', '', 'width=900, height=600, left=200, top=100');
    this.OpenWindow.document.write(`<body onload="checkIfPdf(${doc.uploadedDocUrl})">${str}</body>
    function checkIfPdf(doc) {
      if(doc.endsWith(".pdf")) {
        console.log("is pdf")
      } else {
        console.log("is not pdf")

I want keep width and height attributes as 100% if the doc file ends with ".pdf"
else I want to keep width and height attributes as auto.

How to write this condition?

Working stackblitz= https://stackblitz.com/edit/angular-ivy-ns536z


you can define another function in ts file call it to assign value of let str = this.pdfchecker(url)

Where pdfchecker will look something like this:

const last = url.split('.');
if(last[last.length -1] == 'pdf'){
    let str = //value of str
    return str
    let str = //other value of str
    return str

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