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The problem is Using String literals in Javascript calls requires care in escaping quotes and getting the but leaving double quotes around the final value, like we expect in HTML attributes.

Here's an example of the right way to do this (thanks to John Brad):

onchange='"someFunc(this.form, \'abc\')"'

Notice here that there are

• single quotes

...

• surround the double quotes, and

...

• inline single quotes

...

• in the Javascript are escaped

...

• .

When rendered, the statement is rendered without the pair of surrounding single quotes, and the literal String stays quoted.

onchange="someFunc(this.form, 'abc')"