Dreamweaver显示javascript的红色标签

Question

Does anyone know what could be wrong with this code? It is showing a red label in Dreamweaver

$('#left_bar .cart-info').append('<div>'+localStorage["myid"] = document.getElementById("myid").value =parseInt(localStorage["myid"] || "0", 10) + 1;+'<input id="myid" type="text" name="itemquantity[]" value="1"/></div>');

Answer 1

Try :

$('#left_bar .cart-info').append('<div>' + (localStorage["myid"] = document.getElementById("myid").value = parseInt(localStorage["myid"] || "0", 10) + 1) + '<input id="myid" type="text" name="itemquantity[]" value="1"/></div>');

You have a misplaced semi-colon, and should surround your affectation with parenthesis to distinguish + semantics (addition vs. concatenation).