jQuery Undetermined String Literal Error

<p>Encountering the frustrating "undetermined string literal" error in JavaScript? This guide outlines three common scenarios and their solutions.</p> <p><img src="/static/imghwm/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/174093211139591.jpg" class="lazy" alt="jQuery Undetermined String Literal Error "></p> <p><strong>1. Multi-line Strings:</strong></p> <p>Assigning multi-line strings directly to a variable often triggers this error. To resolve this, use the backslash (<code></code>) as a line continuation character at the end of each line, or concatenate shorter string segments.</p> <p><strong>2. Incorrect String Formatting (Invalid Characters):</strong></p> <p>This error frequently occurs when handling HTML strings, especially those loaded dynamically (e.g., via AJAX). Before assigning the string to a variable, sanitize it using a function to remove or escape problematic characters. (Specific sanitization methods depend on the source and context of your HTML.)</p> <p><strong>3. Angle Brackets:</strong></p> <p>Unexpected angle brackets (<code><</code> and <code>></code>) within strings can cause issues, particularly when working with jQuery and AJAX. In some cases, encoding the string using <code>encodeURIComponent()</code> before sending it via AJAX might be necessary. Alternatively, escaping the angle brackets within the string itself might resolve the problem. Consider the following example:</p> <pre class="brush:php;toolbar:false">var contentQuery = 'first 10 location like "abc"'; // Example query $.ajax({ type: 'POST', url: '/ajax/abc', data: 'content=' + encodeURIComponent(contentQuery), // Encode before sending dataType: 'html', success: function(data){ console.log(data); $('#results').html(data); } });</pre> <p>This approach encodes the query string, mitigating potential conflicts with angle brackets in the AJAX request. Directly testing the string in the browser's console (e.g., using Firebug) can help isolate the problem.</p> <p><strong>Frequently Asked Questions (FAQ):</strong></p> <p>While the original FAQ section provides valuable information, it's more effective to address specific questions related to the "undetermined string literal" error within the context of the three scenarios already described. The original FAQ is overly broad and doesn't directly address the core issue. A more focused FAQ would be beneficial.</p>

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