pass variable to quotation in javascript

Question

I have a web app, backend using Django, frontend using HTML5.

I want to pass a variable from bootstrap table to the quotation in javascript.

<th class ='Format_issued' data-field="book.publisher" data-formatter="renderFormat">Material Format</th>

<script>
            function renderFormat(value) {
            return '<select style="width: 7em" name="Material_format" id="Material_format" >\n' +
                '                <option value="">--Select--</option>\n' +
                '               <option value="eText" {% if ' + value + ' == "eText"  %} selected="selected" {% endif %}>eText</option>\n' +
                '                <option value="No Material" {% if value == "No Material"  %} selected="selected" {% endif %}>No Material</option>\n' +
                '              
                '            </select>'
        }
</script>

'value' is the variable that I want to pass. But I have tried several method: 1 . use ' + value + ': ' <option value="eText" {% if ' + value + ' == "eText" %} selected="selected" {% endif %}>eText</option>\n'

2 . use value in my js quotation directly: ' <option value="No Material" {% if value == "No Material" %} selected="selected" {% endif %}>No Material</option>\n'

all could not pass the value variable.

How could I pass 'value'?

Does this answer your question? What is the difference between client-side and server-side programming? — Abdul Aziz Barkat
– Abdul Aziz Barkat, Commented Nov 7, 2021 at 11:32

Rvector · Accepted Answer · 2021-11-07 11:32:19Z

Always use javascript template literal when handling some complex string output. In your case, it's possible to combine template literals with JS ternary operator like this :

function renderFormat(value) {
    return `<select style="width: 7em" name="Material_format" id="Material_format">
    <option value="" ${(value === 'empty') ? 'selected="selected"' : ""}>--Select--</option>
    <option value="eText" ${(value === 'eText') ? 'selected="selected"' : ""}>eText</option>
    <option value="No Material" ${(value === 'No Material') ? 'selected="selected"' : ""}>No Material</option>
</select>`;

}

Test output :

console.log(renderFormat("No Material"));
// console.log(renderFormat("eText"));
// console.log(renderFormat("empty"));

// Output
<select style="width: 7em" name="Material_format" id="Material_format">
  <option value="" >--Select--</option>
  <option value="eText" >eText</option>
  <option value="No Material" selected="selected">No Material</option>
</select>

NB : Do not mix Js template literals and Django template tags. Just a advice.

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