CODEWITHSUNDEEP
javascriptcssclip-path
Tomáš Zato
Tomáš Zato

Reputation: 53245

Error in parsing value for ‘clip-path’

I'm trying to create clip path around user's mouse. This is my code:

const rect = this.image.getBoundingClientRect();
const width = rect.right - rect.left;
const height = rect.bottom - rect.top;

const clipSizePx = 10;
const clipSizePerc = 100 * (clipSizePx / Math.max(width, height));

const mouseXPerc = 100 * ((e.clientX - rect.left) / width);
const mouseXStartPerc = Math_cap(mouseXPerc - clipSizePerc / 2, 0, 100);
const mouseXEndPerc = Math_cap(clipSizePerc/2 + mouseXPerc, 0,100);

const mouseYPerc = 100 * ((e.clientY - rect.top) / height);
const mouseYStartPerc = Math_cap(mouseYPerc - clipSizePerc / 2, 0, 100);
const mouseYEndPerc = Math_cap(mouseYPerc + clipSizePerc / 2, 0, 100);
const clipPath = "clip-path: polygon(0% 0%, 0% 100%, "
    + mouseXStartPerc + "% 100%,"
    + mouseXStartPerc + "% " + mouseYStartPerc + "%,"
    + mouseXEndPerc + "% " + mouseYStartPerc + "%,"
    + mouseXEndPerc + "% " + mouseYEndPerc + "%,"
    + mouseXStartPerc + "% " + mouseYEndPerc + "%,"
    + mouseXStartPerc + "% 100%,"
    + " 100% 100%,"
    + " 100% 0%);";
console.log("Clip path: ", clipPath,"\nMouse: ", [mouseXPerc, mouseYPerc]);
this.image.style.clipPath = clipPath;

This is the clip path I am trying to assign:

clip-path: polygon(0% 0%, 0% 100%, 30.90039334549982% 100%,30.90039334549982% 58.02269121483121%,32.229061634508525% 58.02269121483121%,32.229061634508525% 59.351359503839916%,30.90039334549982% 59.351359503839916%,30.90039334549982% 100%, 100% 100%, 100% 0%);

This is the error, totally unhelpful:

Error in parsing value for ‘clip-path’. Declaration dropped.

I really wonder why have CSS errors been always so unhelpful.

Anyway, does anyone see what's wrong with the clip path?

Upvotes: 0

Views: 413

Answers (1)

user943702
user943702

Reputation: 954

The rule should not be ended with semicolon

el.style.clipPath = "polygon(...)";   // OK
el.style.clipPath = "polygon(...);";  // Fail

Upvotes: 1

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