Question

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Invalid assignment left-hand side, javascript

                   var htmlToAdd = '<label for="A'+indexNr+'" class="PriceLabel">Min</label>'
                                += '<input style="width:3em" name="B'+indexNr+'" id="B'+indexNr+'" type="text"  />'
                                += '<label for="C'+indexNr+'" class="MaxPriceLabel">Max</label>'
                                += <input style="width:3em" name="D'+indexNr+'" id="D'+indexNr+'" type="text"  />';

I am trying to create html as string and then use append to some another html element. Firebug is giving me

invalid assignment left-hand side

    [Break On This Error] += '<input style=...rcentage'+indexNr+'" type="text" />'   

Answer 1

Replace += with +

+= means “Take the variable on the left, append what is on the right to it, then assign back to the variable” … but you have a string to the left of each one, not a variable.